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Build Your First Useful App with Claude Code

Install Claude Code and ship one real project, start to finish.

Install Claude Code and build a real spending dashboard from a messy statement in fifteen minutes.

→Your first real build in an afternoon, then the mental model to do it again with anything.

What you get

✦A guided first project: a working spending dashboard from a messy CSV
✦The exact install steps and a copy-paste build prompt
✦Reference totals so you can check the result is actually right
✦A validation fixture for edge cases like refunds and bad rows
✦The repeatable loop behind every good AI build

The Kit, every file you get

The done-for-you working files. This is the leverage you're buying.

Working files

  • 1 - Install Claude Code (CHECKLIST).md
  • 2 - Build the Money Map (PROMPT).md
  • 3 - The core loop (REFERENCE).md
  • CLAUDE.md.txt
  • Reference - Money Map Checks.md
  • transactions.csv
  • validation/transactions-check.csv

What's in the full guide

  • Your first useful build
  • What Claude Code does
  • Install and create the project folder
  • Build and check your Money Map
  • Working files included here
  • The mental model that makes it click
  • The highest-leverage habit: give it a map
  • The six-step loop behind every good build
  • Pro tips your first week won't teach you
  • The prompts professionals actually reuse
  • Take the Money Map further
  • Possible commercial directions
  • Ten habits that make it reliable
  • Choose your next build
Free sample · read before you buy

The six-step loop behind every good build

This rhythm never changes; only the size of what you point it at grows. It's on your one-page reference card.

  1. Describe the outcome, not the implementation. You did this with 'turn this CSV into a spending dashboard.'
  2. Read the plan before the code. A wrong plan produces confident wrong code: catch it early.
  3. Let it draft, then skim the code for anything alarming.
  4. Run it on real input: your actual messy file, not a tidy imagined one.
  5. Report what broke, specifically: 'the totals ignore refunds' beats 'it's wrong.'
  6. Review, then keep it. Never ship code you haven't at least skimmed.
The one rule
Never ship code you haven't at least skimmed.
Checking code is more than skimming
Run the expected examples and inspect actual outputs. Test empty data, refunds, transfers and invalid rows. Before distributing the app, check browser errors and how it handles private data. A code skim alone is not a release gate.

This is one chapter from the full guide. Every step, prompt and working file unlocks on purchase.

Who it's for

BeginnersDevelopers
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