I'm a novice-to-intermediate Ubuntu user, and I've been on 10.04 since it came out. I've seen the Unity desktop and it looks pretty cool, and frankly, I'm tired of some of the problems my ASUS laptop has with 10.04. I'd like some help upgrading to 12.04.
I'm aware that I'll probably want to do a clean installation. I already have the .iso burned to a CD, so that's taken care of. What I'd really like help with is making the transition as seamless as possible. How do I back up everything I want to keep? How do I know where everything I want to keep is stored? I know I'll obviously want my /home and /var/www directories saved (because I'm a web developer and do test work on localhost), but what else is important?
Please let me know any information I can give you to help.