Here are some things to remember:
• Hook is still highly experimental, and currently can not currently convert projects.
• Please don't form your reputation of Hook from early source code.
Here is a step by step guide to using Hook.
- Download the Hook source code.
- Point your browser to "https://scratch.mit.edu/projects/editor/?tip_bar=home".
- Click the "File" menu, and select "Upload from your Computer".
- Upload the ".sb2" file in "build".
- Click the green flag, and follow the instructions.