Learn by doing · free

Hands-on Labs

Reading a chapter is step one. In a lab you do it yourself, on your own laptop or your own free account, one numbered step at a time, and you check your result after every important step.

85 labs ready
117 coming soon
One lab for every chapter

How every lab works

A short real-world story (Suppose we are…), the goal, the time it takes and the free tools you need.
Numbered steps with the exact clicks and commands, and a What you should see line after the important ones.
Common mistakes with fixes, a self-check checklist, and a challenge to try at home.

Labs by course

Cyber Security labs 50 ready · 0 coming soon

Show all 50 ready Cyber Security labs

Open the Cyber Security course →

Power BI labs 35 ready · 0 coming soon

Show all 35 ready Power BI labs

Open the Power BI course →

Excel labs 0 ready · 31 coming soon

Labs for the Excel course are being written. Here is the plan, one lab per chapter:

Chapter 1Coming soonCreate, save and format your first monthly expense sheet
Chapter 2Coming soonBuild a clean data-entry sheet with drop-down lists (Data Validation) and Flash Fill
Chapter 3Coming soonWrite SUM, AVERAGE, IF and absolute references ($) on a marks sheet
Chapter 4Coming soonFind prices with XLOOKUP and VLOOKUP exact match, and handle #N/A
Chapter 5Coming soonClean a messy customer list: TRIM, PROPER, Remove Duplicates and Text to Columns
Chapter 6Coming soonTurn a range into an Excel Table, then sort and filter sales by city and date

Show all 31 planned Excel labs

Chapter 7Coming soonBuild your first PivotTable and PivotChart: sales by city and product
Chapter 8Coming soonMake a column, a line and a combo chart and format them for a report
Chapter 9Coming soonUse FILTER, SORT and UNIQUE to build a live city report
Chapter 10Coming soonImport and clean a CSV with Power Query, then refresh it with new data
Chapter 11Coming soonFind the price needed for a target profit with Goal Seek and compare three scenarios
Chapter 12Coming soonRecord a formatting macro, read its VBA code and run it from a button
Chapter 13Coming soonBuild a one-page Excel dashboard with one slicer connected to two PivotTables
Chapter 14Coming soonLock formula cells, protect the sheet and set up a clean print layout
Chapter 15Coming soonMonthly report project: from raw data to a printable summary
Chapter 16Coming soonTimed practice: 10 Excel tasks in 30 minutes with an answer key
Chapter 17Coming soonExplain XLOOKUP vs VLOOKUP and PivotTables aloud with a live demo
Chapter 18Coming soonSolve 5 interview-style Excel tasks on a sample file
Chapter 19Coming soonShortcut drill: finish a cleaning task without touching the mouse
Chapter 20Coming soonGlossary flashcards: 25 Excel terms with your own examples
Chapter 21Coming soonPick one project brief and plan its sheets, formulas and charts
Chapter 22Coming soonWrite KPI formulas (growth %, margin %, average order value) for one industry
Chapter 23Coming soonSummarise three monthly sheets into one with 3-D SUM and links to another workbook
Chapter 24Coming soonRelate two tables in the Data Model and write your first DAX measure in Excel
Chapter 25Coming soonBuild your personal top-20 shortcut list for Windows or Mac and test it
Chapter 26Coming soonTry 10 analyst tricks on one sheet: Go To Special, custom number formats and more
Chapter 27Coming soonRebuild one industry template from scratch and compare it with the ready-made one
Chapter 28Coming soonAsk Copilot for three formulas, then check each answer by hand
Chapter 29Coming soonRun your first =PY() cell: a pandas summary of a sales table in Excel
Chapter 30Coming soonDescribe a dataset with AVERAGE, MEDIAN, STDEV.S and a histogram
Chapter 31Coming soonForecast the next 3 months with FORECAST.ETS and Forecast Sheet

Open the Excel course →

AWS Cloud labs 0 ready · 27 coming soon

Labs for the AWS Cloud course are being written. Here is the plan, one lab per chapter:

Classroom chapterComing soonFind the IP address, gateway and public IP of your laptop and your phone
Classroom chapterComing soonOpen a page on 127.0.0.1 and list which ports your laptop is using
Classroom chapterComing soonExplore Regions and Availability Zones in the console and choose a region for Mumbai users
Classroom chapterComing soonLock the root user with MFA, create an IAM admin user and launch your first EC2
Classroom chapterComing soonStop, start and reboot your EC2 and note what changes (public IP, EBS, ENI)
Classroom chapterComing soonBuild a folder tree from a picture using pwd, ls, cd and mkdir

Show all 27 planned AWS labs

Classroom chapterComing soonCreate and edit files with touch, cat, nano and vi
Classroom chapterComing soonCopy files and folders with cp, cp -r, wildcards and brace ranges
Classroom chapterComing soonRename, move and safely delete with mv, rm and rmdir, and find hidden files
Chapter 1Coming soonTrace a website request from your laptop with ping, nslookup and traceroute
Chapter 2Coming soonMatch real commands and tools to each OSI layer on a worksheet
Chapter 3Coming soon20-command Linux warm-up on your EC2 server
Chapter 4Coming soonFind, filter and archive logs with grep, find, tar and pipes
Chapter 5Coming soonLaunch, connect over SSH and safely terminate an EC2 instance on the free tier
Chapter 6Coming soonInstall Nginx and Apache on two servers and compare their config files
Chapter 7Coming soonHost a static website on EC2 with Nginx and open it from your phone
Chapter 8Coming soonChange the port, root folder and index file, then fix the 403 and 404 you create on purpose
Chapter 9Coming soonPoint a domain and a subdomain to your EC2 with A and CNAME records
Chapter 10Coming soonHost a PHP page on EC2 that reads from a MySQL database
Chapter 11Coming soonDeploy a Flask app behind Nginx as a systemd service
Chapter 12Coming soonBuild a LEMP stack on one EC2 instance step by step
Chapter 13Coming soonAttach, format and mount a new EBS volume, then grow it without downtime
Chapter 14Coming soonAttach an Elastic IP, create an AMI and a snapshot, and resize the instance
Chapter 15Coming soonBuild a VPC with public and private subnets and reach the private server through a bastion host
Chapter 16Coming soonCreate a private RDS MySQL database and connect to it only from EC2
Chapter 17Coming soonCreate an Auto Scaling group that adds a server when CPU is high
Chapter 18Coming soonPut an Application Load Balancer in front of two EC2 servers and watch it share traffic

Open the AWS Cloud course →

DevSecOps labs 0 ready · 39 coming soon

Labs for the DevSecOps course are being written. Here is the plan, one lab per chapter:

Chapter 1Coming soonMap one app's journey from code to production and mark where each security check fits
Chapter 2Coming soonMeasure three golden metrics (lead time, MTTR, open vulnerabilities) for a sample repo
Chapter 3Coming soonThreat-model a login page with STRIDE on one sheet of paper
Chapter 4Coming soonFix three OWASP Top 10 issues in a small intentionally vulnerable training app
Chapter 5Coming soonReview a pull request with a security checklist and suggest fixes
Chapter 6Coming soonProtect a GitHub repo: branch protection, signed commits and secret scanning

Show all 39 planned DevSecOps labs

Chapter 7Coming soonRecap lab: secure a tiny repo end to end using Chapters 1 to 6
Chapter 8Coming soonHarden a Linux VM with a CIS-style checklist and record before and after scores
Chapter 9Coming soonLock down security groups and NACLs for a 2-tier app and test what is blocked
Chapter 10Coming soonMove a hard-coded secret into a secrets manager and rotate it
Chapter 11Coming soonUse least-privilege tokens and pinned actions in a GitHub Actions pipeline
Chapter 12Coming soonAdd SAST and dependency scanning to a pipeline and fix the first finding
Chapter 13Coming soonGenerate an SBOM for a sample app and check it for known vulnerable packages
Chapter 14Coming soonShrink and harden a Docker image: non-root user, small base image and an image scan
Chapter 15Coming soonApply Pod Security Standards and a NetworkPolicy in a local kind cluster
Chapter 16Coming soonScan Terraform code for misconfigurations and fix a public S3 bucket
Chapter 17Coming soonTurn on CloudTrail, threat detection and a public-bucket check in a sandbox AWS account
Chapter 18Coming soonReplace long-lived access keys with an IAM role for an app on EC2
Chapter 19Coming soonAdd MFA and short-lived sessions to a sample login and test the policy
Chapter 20Coming soonAdd authentication, rate limits and input validation to a small API
Chapter 21Coming soonWatch container runtime events with Falco and trigger a safe test alert
Chapter 22Coming soonSend app logs to a free log stack and write one detection rule
Chapter 23Coming soonTabletop incident drill: leaked key, contain, rotate and write the timeline
Chapter 24Coming soonAutomate one compliance check (encryption at rest) and produce an audit report
Chapter 25Coming soonTriage 10 scanner findings by severity and exposure, and patch the top 3
Chapter 26Coming soonCreate a secure "golden path" template repo with checks built in
Chapter 27Coming soonWrite an SLO and a security error budget for a sample service
Chapter 28Coming soonEncrypt a database at rest and in transit and restrict who can connect
Chapter 29Coming soonGive a Lambda function least-privilege permissions and safely stored secrets
Chapter 30Coming soonCheck a sample Android app for hard-coded secrets and insecure local storage
Chapter 31Coming soonTest a sample chatbot against prompt-injection examples and add guardrails
Chapter 32Coming soonDeploy with Argo CD from Git and block an unsigned image
Chapter 33Coming soonDraw a reference architecture for a 3-tier app with security zones
Chapter 34Coming soonSafe purple-team check: simulate one known technique in a lab and confirm the alert fires
Chapter 35Coming soonScore a team on a DevSecOps maturity model and pick the next 3 improvements
Chapter 36Coming soonDebug a failing security gate in CI from the logs to the fix
Chapter 37Coming soonCompare two free scanners on the same repo and choose one with reasons
Chapter 38Coming soonCapstone: one small app from commit to production with every security gate green
Chapter 39Coming soonExplain your capstone pipeline in a 5-minute mock interview

Open the DevSecOps course →

Data Science labs 0 ready · 20 coming soon

Labs for the Data Science course are being written. Here is the plan, one lab per chapter:

Chapter 1Coming soonSort 10 real business questions into analytics tasks and data science tasks
Chapter 2Coming soonInstall Python and Jupyter, create a virtual environment and run your first notebook
Chapter 3Coming soonWrite 10 small Python snippets on a sales list: loops, if and functions
Chapter 4Coming soonCompute totals, averages and percentages on a NumPy array of daily sales
Chapter 5Coming soonLoad city_sales.csv into pandas and explore it with head, info and describe
Chapter 6Coming soonFilter the Mumbai rows and sort by sales with loc and sort_values

Show all 20 planned Data Science labs

Chapter 7Coming soonTotal sales by city and product with groupby and agg
Chapter 8Coming soonMerge a sales table with a city-region table and stack two months with concat
Chapter 9Coming soonClean a messy dataset: missing values, duplicates and wrong data types
Chapter 10Coming soonParse dates, convert UTC to IST and clean product names
Chapter 11Coming soonTurn wide monthly data into long format with melt, and back with pivot_table
Chapter 12Coming soonDo a 10-question EDA on a sample dataset and write 3 findings
Chapter 13Coming soonDraw a bar chart, a line chart and a histogram with matplotlib and label them properly
Chapter 14Coming soonMake a box plot and a heatmap with seaborn and explain what each shows
Chapter 15Coming soonTurn a confusing chart into a clear one and write its story in 3 lines
Chapter 16Coming soonMini project: a quick-commerce dataset from raw CSV to 5 charts and a summary
Chapter 17Coming soonTimed practice: 10 pandas tasks in 40 minutes with hints
Chapter 18Coming soonSolve 5 interview-style pandas questions and explain your code aloud
Chapter 19Coming soonBuild your own pandas cheat sheet and test every line in Jupyter
Chapter 20Coming soonGlossary flashcards: 25 data science terms with examples

Open the Data Science course →

Cyber security labs are defensive: you protect your own accounts, laptop and practice servers, and any testing happens only on intentionally vulnerable training apps inside your own isolated lab.