The practical Claude coding manual.

1. Overview: what Claude is useful for

Claude is most useful when you treat it as a collaborator rather than a vending machine for code. It can explain unfamiliar code, draft a small implementation, help reason through bugs, compare approaches, write tests, and review your changes. Your job is to keep the task clear, verify the output, and learn from the explanation.

Claude Code is the more developer-focused workflow. Depending on your setup, it can work in a terminal or editor environment, inspect project context, propose edits, and help with build/test cycles. Use it carefully at first: small tasks, frequent reviews, and clean backups.

2. Setup checklist

• Create or open a Claude account using the referral link if you want to use the promotion.
• Check the official signup page for current offer, plan, billing, and cancellation terms.
• Create a practice project folder before using Claude on important code.
• Install a code editor such as VS Code if you want a beginner-friendly visual workspace.
• Use Git or copy backups before allowing broad file changes.

3. The prompt formula

Good coding prompts usually include six parts: goal, current context, constraints, exact files, what you already tried, and desired output format.

Goal: Build a simple task tracker.
Context: I am new to JavaScript and have index.html, styles.css, and app.js.
Constraints: Use plain HTML/CSS/JS. No frameworks.
Files: I will paste app.js below.
Tried: The Add button does nothing.
Output: First explain the likely issue, then give the smallest code change.

Prompt patterns

4. Core workflows

Build a feature

1. Describe the user-visible outcome.
2. Ask for a brief plan and affected files.
3. Approve one small chunk.
4. Run the app/tests.
5. Paste errors and repeat.

Fix a bug

1. Paste the exact error and steps to reproduce.
2. Ask Claude to explain likely causes before changing code.
3. Apply the smallest fix.
4. Ask for a regression test or manual test checklist.

Learn a codebase

1. Ask for a file tree explanation.
2. Ask where a feature probably lives.
3. Ask for data flow in plain English.
4. Ask for a “first safe change” recommendation.

5. Project memory and reusable rules

For repeated project instructions, keep a project notes file. Claude Code workflows often use persistent instruction files such as CLAUDE.md to tell Claude project conventions, build commands, architecture notes, and repeated preferences. Keep those notes short, factual, and easy to audit.

# Project instructions
- Use plain JavaScript unless I ask for a framework.
- Run npm test before final answers when tests exist.
- Explain new concepts in beginner language.
- Ask before changing more than three files.

6. Review, privacy, and safety

Claude can help you move quickly, but you are responsible for what you publish. Review code, avoid sharing secrets, remove API keys from prompts, and do not paste private customer data into tools unless your policies allow it. Ask Claude to flag security concerns, but do not treat that as a complete security audit.

• Use environment variables for secrets.
• Review dependencies before installing them.
• Ask what files changed and why.
• Ask for rollback steps before risky changes.
• Keep important data backed up.

7. Troubleshooting prompts

8. Beginner glossary

9. Accuracy and official sources

This independent manual summarizes public Claude and Claude Code information and points readers back to official pages for details that can change, including pricing, plan access, install steps, and product features.

• Official Claude Code overview
• Official Claude Code quickstart
• Official VS Code integration docs
• Official Claude plan guide