An independent field manual for Claude, the AI assistant +1 (646) 555-0138 Account sign-in
Manual Actually use the thing

Claude

Nocturne is an independent field manual for Claude, written for people meeting the AI assistant for the first time who want the chat, the coding terminal and the Claude sign-in set out with the precision the tool deserves.

Open the sign-in What Claude can do
Why a manual

Claude

Meeting an AI assistant for the first time is odd — you are typing to something that reads a page in a blink. Nocturne breaks Claude down the way a beginner needs it: what to prompt, what it is reliably good at, and where your work is stored once you sign in. Describe a task in plain words and it returns a clear, usable answer; hand Claude a long file and it will summarise, draft or check it without dropping the thread. The aim of Claude for a newcomer is a dependable tool, not a magic trick — learn the moves once and they serve you.

Prompt in plain words

No incantations; describe the task the way you would to a colleague.

Feed it your files

Paste a document or drop an image and it reads before it answers.

Claude - built to be useful and careful, not flashy

The idea behind Claude is an assistant that pulls its weight without pretending. Ask it to draft, compare, or explain, and it returns something you can actually use. When Claude is unsure it flags the doubt rather than bluffing — the habit you want from a tool you are still learning to trust.

✎
Write and reworkDrafts, edits and summaries in your own voice.
▤
Read your filesDocuments, data and images, understood in context.
>_
Work in the terminalRead a project, edit code, run tasks — with approval.
Person working with an AI assistant at a desk

Claude AI: the assistant in a browser

For most people claude ai lives in a browser tab: open the site, sign in, and a blank prompt is waiting. The claude ai chat holds your past threads, so you resume where you stopped, and it runs the same on a laptop or a phone.

One place for every thread

Your chats are saved, ready to continue whenever you return.

Same assistant, any device

Phone in the queue, laptop at the desk — one account throughout.

Claude Code - the assistant in your terminal

For people who ship software, claude code brings the same assistant into the command line, where it reads a project, edits files and runs tasks on your say-so. It is the same Claude account as the chat, aimed at your codebase, and it states its plan before it touches a thing.

Works in the repo

It reads the files, proposes edits, and pauses for your approval.

Shows the plan first

Plain-language steps up front, so you stay in command.

Developer using an AI coding terminal
On real desks
Where the actual work gets done.
Home desk with screens Working with AI on a laptop Terminal on a screen Focused desk at night

Claude Desktop: the assistant on your machine

Illustrative examples of everyday use, not a promise of any specific result.

Free
Tier to start
1
Account, every device
3
Models to pick
24/7
Ready when you are

A window on hand

The desktop app keeps the assistant a shortcut away while you work.

The same threads

Everything from the web is here, and new chats sync back.

Common questions
What new users ask us first.
Is Nocturne the official site?

No. Nocturne is an independent manual for Claude. We break the assistant down in plain terms and point you to your own account; we are not affiliated with the maker of any product our keywords name.

Can I try it without paying?

A free tier lets you prompt and find your feet, and paid plans layer on more usage and features. Look over the latest details before moving up a plan.

Is what I type kept private?

Your account holds your conversations; read the provider's own privacy terms for exactly how your data is stored and used.

The team
People whose own first prompt was recent history.
Portrait of Ivo MarekIvo MarekFounder · research
Portrait of Sana QureshiSana QureshiEditor
Portrait of Ben AokiBen AokiOnboarding
Portrait of Lucia FerrariLucia FerrariReader support
Write your first prompt.

Step to the sign-in and your saved threads open exactly as you left them.

Open the sign-in