How to install activities

1. start sugar browse application
2. Look to the top line for home/wiki/bugs/school/activities
3. click activities

You can click on the ones you want to add to you sugar desktop.

After download

1. move mouse cursor to top right corner which should bring up frame
2. click right square icon with lines

This should show all installed activities. Ones with filled in stars on left side will show on ring, they are your favorites. When you use mouse to hit circle icon with spot to return to F3 home screen.

Questions

Can I install an .xo directly e.g.http://web.media.mit.edu/~jmaloney/scratch-xo/Scratch-12.xo?

yes.

How do I install an .xo?

You can install any .xo bundle by downloading it (clicking on it) in the Browse activity (See [1]).