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Data Structures & AlgorithmsComplexity analysis up to graphs and DP.Operating SystemsProcesses, scheduling, memory and concurrency.Database Management SystemsRelational modelling, transactions and indexing.Computer NetworksFrom wires and radio waves up to the web.

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Traditional Scraping4

Dynamic Sites & Hidden APIs3

Browser Automation Frameworks5

CAPTCHAs & Boundaries4

Understanding CAPTCHAs
Avoiding CAPTCHAs and Recovering From a Ban
What to Scrape and What Not To
What's Still Genuinely Hard to Scrape

Scaling & Production3

Build Your First Scraper6

Modern AI Scraping4

Lessons

Contribute, invite only

Traditional Scraping4

Dynamic Sites & Hidden APIs3

Browser Automation Frameworks5

CAPTCHAs & Boundaries4

Understanding CAPTCHAs
Avoiding CAPTCHAs and Recovering From a Ban
What to Scrape and What Not To
What's Still Genuinely Hard to Scrape

Scaling & Production3

Build Your First Scraper6

Modern AI Scraping4

Learn Web ScrapingCAPTCHAs & Boundaries

CAPTCHAs & Boundaries

4 lessons

1
Understanding CAPTCHAs
What CAPTCHAs actually check, the different kinds you'll encounter, and why there's no clean universal way to defeat them.
12 min read
2
Avoiding CAPTCHAs and Recovering From a Ban
Why staying under the radar beats solving CAPTCHAs, how to spot a block in code, and a step-by-step plan for when a site starts returning 403 on everything.
11 min read
3
What to Scrape and What Not To
A concrete, practical line between reasonable scraping and targets you should leave alone — going beyond "check robots.txt" into specific categories of data and sites.
10 min read
4
What's Still Genuinely Hard to Scrape
An honest accounting of targets that remain difficult or impractical to scrape even with every modern tool in this course, and why.
9 min read

CAPTCHAs and Boundaries Quiz8 questions · pass mark 60%