Tutorials
Curated tutorials covering programming languages, dev tools and fun knowledge
Programming Languages
Start from scratchPython in 21 Days
From zero to Python mastery with a 21-day interactive journey
PopularJava Quick Start
Master Java basics and OOP in 14 days
PopularC# Quick Start
Master C# and .NET core concepts in 14 days
PopularC Language (60 Days)
A 60-day systematic course from syntax to pointers and memory
PopularDev Tools & Databases
Must-haveGit Quick Start
Version control, branching and team collaboration in 7 days
PopularVSCode Icebreaker
Level up your editor config and workflow in 14 days
PopularMySQL Tutorial
21 lessons from SQL syntax to query optimization
PopularFastAPI in 7 Days
Master FastAPI from routing to async programming in 7 days
PopularFun Knowledge for Kids
Fun learningPrimary Math
A knowledge map of primary school math, covering grades 1-6
Fun Geography
3D cartoon map of China — click provinces to explore food and landmarks
NEWFun English
Fun English learning for kids with vocabulary, grammar and interactive practice
NEWFun Physics
Parabolic cannon, circuit links, spring oscillator, light refraction, elastic collisions
NEWFun Geometry
Build 3D blocks and view from front, left and top to understand projections
NEWGame Guides
Fun guidesSoftware Engineering Series
PopularSystem Planning & Analysis
IS planning, requirements analysis and system design with interactive cards and quizzes
NEWSoftware Requirements
Requirements elicitation, modeling, validation and management with interactive cards and quizzes
NEWProject Management
Scope, schedule, cost, quality, risk and configuration management with interactive cards and quizzes
NEWSoftware Engineering
Process models, design methods, testing and quality management with interactive cards and quizzes
NEWSoftware Architecture
Architecture principles, styles, quality attributes, distributed and cloud-native with interactive cards and quizzes
NEWSoftware Design
Structured design, OO design, design patterns and UML with interactive cards and quizzes
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