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Python, Go, SQL, AI, algorithms and backend. The first lesson of every course is open to try before you sign up.

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MCP Servers in Python: the protocol by hand

Build a working MCP server out of the standard library, one JSON line at a time. No SDK, no framework, no magic: you type every field that goes over the wire, and the trainer runs your code and checks the bytes. You learn the current stateless revision 2026-07-28, and you also learn to recognise the handshake era that most deployed servers still speak. Twelve lessons, seven graded exercises, free.

beginner$39.00

AI Tools from Scratch: ChatGPT and Beyond

Get real work out of AI assistants, even if you have never used one. You learn to write prompts that actually work, draft and edit faster, make images, and tell a good answer from a confident wrong one. No coding, no jargon, just the skill that is quietly becoming part of every job.