Step-by-step instructions for installing the BlockSurfaces addon in Blender:
Unzip the downloaded zip file.
In the BlockSurfaces folder, you will find the addon file and the folder with example characters.
Open Blender and go to the top menu. Select "Edit", then "Preferences".
In the window that appears, search for and select the "Add-ons" tab.
Click on the "Install" button.
Browse your computer folders for the BlockSurfaces addon .zip file.
Select the .zip file and click on "Install Add-on".
Make sure to activate the BlockSurfaces addon in the addons list.
In the preferences options, you can access the manual and all the addon tutorials.
Use the keyboard shortcut Ctrl + Shift + Alt + W to run the addon and start creating your characters.
It's important to work with clean collections and create objects in the root collection for the addon to work better.
You can select the "Studio" shader and the object color to better see the different branches
That's it! Now you can enjoy the BlockSurfaces addon in Blende
You can follow this tutorial on YouTube if you prefer.