I have a Ubuntu installation on one of my desktop.
I am not a expert of Linux, but I like the spirit of Linux. Free and Open.
I alway get the tips, referrence, howtos from these top 10 Ubuntu Blogs.
1) Ubuntu Geek
2) Ubuntu Blog
3) Mark Shuttleworth
4) Ubuntu Fridge
5) All about Linux

6) Ubuntu Tutorials
7) Ubuntu Demon’s Blog
8) Only Ubuntu Linux
9) Jonobacon
10) Ubuntux
Somehow the list will become longer and longer. If you have some great site, just comment it below.