Linux4All

My dearly beloved Ubuntu 9.02 will no longer be supported in 2 days. I've never upgraded before and have been putting it off until I had to upgrade. That time has apparently come. My question is essentially how do I do that?

Do I just hit the upgrade button on the Update Manager? Do I need to back up everything I haven't gotten around to backing up yet? Am I in danger of losing everything? How does this work?


Thank you!