surely some of you have tried Ubuntu. We have users on this site who are very new to Linux and also users who have used Linux for more than 5 years. It doesn't matter how much Linux experience you have, you're hear to learn and to get help. Or maybe you want to find out the lastest news about Ubuntu.
Remember: You can create yourself a user and have your own blog on this site. This enables you to write your experiences, get feedback and maybe even find some new friends. Your blog will surely be read hundreds of times! You will even get promoted to the front page. There's no nicer way to learn Linux and specifically Ubuntu.
I'm looking forward to have some postings of you online soon :)