Upgrading - Firefox v3.0 to v3.5
I am using an Ubuntu distribution and I would like to upgrade my Firefox 3.0 to the newer Firefox 3.5. I tried to find tutorials online but was left even more confused. All I want to do is to get my Firefox 3.0 upgraded to 3.5. I do not want both versions installed. I just want one. Also, I would like it if I could still play YouTube videos, Flash, multimedia and all that good stuff. I don't care much for bookmarks; that can go.
Can somebody walk me through how to do this?