This is just a demo map that you can delete right away, if you feel like it...
INS to insert (Windows)
TAB to insert (Mac OS)
ENTER to add siblings
DEL to delete
All key shortcuts
... and some great ideas too!
Use toolbar to add ideas
Drag & Drop and double-click canvas
Find out more? Try http://www.mindmeister.com/help
Check out http://www.mindmeister.com/services/tools/geistesblitz_widgets