Kitchen SinkLearn Claude customizationSource

A practical, open-source course

Learn by building.
Make one change.

Choose your Claude experience. Follow a focused path to a working customization.

What do you want to build?

Explore both customization paths.

YOUR FIRST STEP

Lesson 1 of 8 · Full course

Know the building blocks

Separate instructions, connections, packages, and executable behavior before choosing what to build.

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Different paths, different capabilities. Cowork teaches workflow instructions; Claude Code teaches custom UI and event hooks. Switching paths keeps your completed lessons.

YOUR LESSONS

The full course

All eight lessons are open. Follow the sequence or choose a topic.

SECTION 01

Foundations

2 lessons
01
Shared foundation

Know the building blocks

Separate instructions, connections, packages, and executable behavior before choosing what to build.

Not started02
Shared foundation

Choose your Claude surface

Find the right path for Cowork, the desktop Code tab, or the terminal.

Not started

SECTION 02

Hands-on

4 lessons
03
Cowork

Try a Cowork workflow

Install the small workflow plugin and change the shape of a repeatable result.

Not started04
Claude Code

Follow an event through a hook

See the three core choices: observe, rewrite, or answer.

Not started05
Claude Code

Draw a pane. Change its state.

Connect a button press, an in-memory value, and the next drawing.

Not started06
Claude Code

Read the plugin from the outside in

Trace the loading path, then inspect six excerpts from the actual implementation.

Not started

SECTION 03

Finish and share

2 lessons
07
Shared foundation

Make one change you can explain

Keep a baseline, edit a visible behavior, and compare the result.

Not started08
Shared foundation

Check it. Explain it. Share it.

Match proof to the claim, then package a useful recipe for the next person.

Not started

Keep the tools close.

Use the reference for a quick answer, or download the starter for a hands-on experiment.

Open the quick reference →Download Cowork plugin ↓
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