beginner
A readable, batteries-included language for backends, data work and automation.
821 items39 sections
Complete
What do you want to learn?
14 topics · 9,188 concepts · 1,113 sections · beginner to production.
All topics
beginner
The language every browser runs, and the foundation under React and Next.js.
866 items71 sections
Not written yet
intermediate
Build user interfaces out of small, reusable pieces that react to data.
262 items75 sections
Not written yet
beginner
Package an app with everything it needs so it runs the same everywhere.
360 items69 sections
Not written yet
intermediate
A relational database that keeps your data correct under pressure.
428 items75 sections
132 of 428 covered
advanced
How to shape systems that stay fast and available as they grow.
290 items106 sections
Complete
intermediate
Build typed, async Python APIs with validation and docs built in.
1,277 items106 sections
Not written yet
intermediate
A batteries-included Python web framework for database-backed applications.
1,442 items105 sections
1,112 of 1,442 covered
advanced
The React framework that handles routing, rendering and data fetching for you.
1,291 items103 sections
Not written yet
intermediate
A document database that stores flexible, JSON-shaped records.
482 items86 sections
158 of 482 covered
intermediate
The relational database behind a large share of the web.
391 items79 sections
Not written yet
intermediate
Rent servers, storage and managed services instead of running your own.
278 items70 sections
Complete
advanced
Ship real features on top of models — RAG, agents, evaluation and inference.
659 items97 sections
63 of 659 covered
beginner
Pattern-based problem solving — arrays to graphs, for interviews and daily fundamentals.
341 items32 sections
67 of 341 covered