Guitta you are stupid :) !

All the editing tool will be available if you leave "basic mode". Go in the FILE menu and uncheck "basic mode". If the little "v" near "basic mode" is gone, you're in "normal" mode.
When it's done, you will see all the editing tool. They will appear as icons if you follow the point 1 (file > configuration > screen > layout style > select "DefIcon.style"> press OK)

The "tool popup windows" appear when you click on a tool !
for example, if you click on the "create primitive" command the same window as the one in the image will open.

Please, tell me you're able to do this...

I'm sure that you will be happy with Metasequoia LE.

Eric