Homepage

Help Center has a Getting Started Guide and FAQ to get you going

Working Collaboratively

A Library of How-To's that use visual maps as part of the process

Webspiration is currently free, in Beta, but they don't know how long it will stay that way.

Here are some alternatives, if needed:

Bubbl.us - draw and connect bubbles

Gliffy - for making diagrams and flow-charts

MindMeister

Mindomo

FreeMind

The "original" mind-mapping concepts come from Tony Buzan, who has his own mind-mapping software (not free).