A set of small, composable agent skills for software engineering workflows, taken from the author's own .agents directory.
A collection of Chinese-language circumvention tools, bundled Chrome/Firefox proxy packs, and setup tutorials for V2Ray, Shadowsocks, and related clients.
A free Vibe Coding course that teaches beginners to build and launch AI-assisted products from plain-language descriptions.
An open, bilingual Chinese-language book-guide on lifelong learning in the AI era, covering English study, AI learning, real projects, and personal recovery.
A collection of 70 cybersecurity projects with source code, certification roadmaps, and learning resources, organized from foundations to advanced.
A large curated guide covering self-hosting tools, hardware, and setup walkthroughs for running software on your own servers.
A free, self-paced computer science curriculum assembled from online courses and books, modeled on undergraduate CS degree requirements.
A collection of 42+ runnable Jupyter notebooks, each tutorial covering an advanced technique for Retrieval-Augmented Generation systems.
A study guide and interview-prep curriculum for AI/ML technical roles at big tech, covering coding, ML breadth, system design, and behavioral rounds.
Collection of ready-to-run vulnerable Docker Compose environments for security research, learning, and demonstration.
Code-first Jupyter tutorials for building and deploying production-grade GenAI agents, from prototype to enterprise deployment.
A Chinese-language, systematic Vibe Coding tutorial that takes beginners from idea to full-stack product using AI-assisted programming.
Collection of dozens of minimal bare-metal x86 operating system examples for learning low-level system programming, tested in QEMU and on real hardware.
Reference Android app built entirely in Kotlin and Jetpack Compose that delivers Now in Android news and content updates.
Public datasets and analysis code behind FiveThirtyEight's published articles and graphics.
A collection of interactive R courses that run inside the swirl R package, covering programming, regression, data cleaning, and inference.