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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.
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 Agent View: managing parallel agents without leaving the terminal
I spent months managing many Claude Code agents by hand. Agent View now does it: my terminal-native workflow with Warp and Neovim, and the gaps I patch.
Claude Code effort level: medium does the same work for a third of xhigh's cost
Anthropic says higher effort pays off when a task hides edge cases. I built three tasks like that and ran Opus 5.5 on them 27 times at medium, high and xhigh: every run passed everything. What changed was the bill.
Claude Code plan mode: your plan is already a .md file, and one setting puts it in your repo
Every plan you approve in plan mode is already a .md file, and Claude rereads it after compaction. The catch is where it lands: ~/.claude/plans, under a random name, mixed in with every other project's.
Claude Code worktree: review any PR by letting Claude run it on its own
`claude --worktree "#1234"` fetches that PR into its own folder and Claude puts it through its paces: installs, runs the tests, reports back. Your branch stays open in the other terminal, uncommitted changes included.
Sonnet 5.5 vs Opus 5.5 in Claude Code: the same work at half the cost, and faster
Anthropic says Sonnet 5.5 costs up to 30% less than Sonnet 5. I tested it over 48 runs in Claude Code, against Sonnet 5 and against Opus 5.5, your default: it passed everything for under half of what Opus 5.5 cost. Plus when Opus is still worth it.
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