Claude Code Lessons
A complete learning path from quick start to advanced patterns. Work through in order or jump to what you need.
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30 min
12 • Choosing Your Model
Opus vs Sonnet vs Haiku: when to use each
20 min13 • Ralph Wiggum Technique
Getting Claude to simplify complex problems
40 min14 • Extended Thinking
Deep reasoning for hard problems
35 min15 • Prompt Caching
90% cost reduction with smart caching
45 min16 • Agentic Tool Use
Patterns for powerful tool-using agents
40 min17 • System Prompts
Engineering reliable Claude behavior
35 min18 • Vision & Documents
Image and document analysis at scale
45 min19 • Context Management
Keeping Claude focused in large contexts