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Claude Code: from zero to professional. Tips, tutorials and deep dive guides from an engineer who uses it 12 hours a day.
Stop Claude Code asking for permission (without losing control)
Permission prompts in Claude Code don't go away with one setting. There are five levers (rules, modes, auto mode, the sandbox and bypass inside a container), and this guide puts them in the order that cuts the most prompts for the least risk.
Claude Code first steps: the fundamentals that don't expire
The Claude Code fundamentals that don't expire: install, sessions, context, quota, models, permissions. What you actually need to grasp on day 1.
AI: the joy of missing out on what doesn't matter
You can't keep up with AI, and you shouldn't try. The answer isn't resistance or passive acceptance: go all in, but deep on one thing instead of scattered.
Claude Code wrap-up allowance: no more half-done work at the 5-hour limit
The wrap-up allowance lets Claude Code finish the step it's on when you hit the 5-hour limit, instead of stopping with an edit half applied. Your weekly limit pays for it. How often you get it on each plan, and when it doesn't apply.
"Premature close" in Claude Code: check for a missing git or gh first
"Premature close" in Claude Code usually hides a git or gh that isn't installed: up to 2.1.289 the error never said which. How to find it with one command, and when it really is the network.
Haiku 5.5 in Claude Code: set autocompact to 130K and pay 71% less
Haiku 5.5 doesn't compact until about 967K, so a long session pays the high rate. At 100K it can loop; at 130K I paid 71% less.
Claude Haiku 5.5 in Claude Code: 90% cheaper subagents
Claude Haiku 5.5 is Claude Code's new Haiku: 90% cheaper than Haiku 4.5 and far ahead on benchmarks. The full discount only holds under 100K tokens, though, and your session starts at half that.
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