Ubuntu is great. I honestly don't think it's any less "user-friendly" than Windows or Mac. I love the Software Center especially in the new version of Ubuntu (10.10) that came out on Sunday. It makes much more sense than installers. It's like the App store for smart phones, but you can add 3rd party repositories to it and install anything just by browsing the Center then double clicking what you want. It's brilliant.
As for support/help. If you had never used Windows your entire life and turned it on for the first time, it would be difficult to figure things out without going online, reading a book, or asking a friend for help. Anything new is going to be different and confusing. However, I find that Ubuntu has better online support than any other OS I've used. (I currently have a computer with 7 and two with OS X, and use them extensively). If you know where to go you can get some good help.
http://askubuntu.com/ is a great place to go. If you can't find an answer to your question, there's a good chance that it will be answered within minutes of you posting it.
http://ubuntuforums.org is a good place as well. I find that askubuntu (and other Stack Exchange sites) are the best place to ask questions though.
I also like to keep my eye on omgubuntu.co.uk for tips, tricks, nice apps, and updates.
Oh, I almost forgot. I'd like to also discredit the common "if you game, don't linux" mindset people have. They're still stuck in the previous decade (same with the people who say, "linux is for nerds" or, "i wouldn't recommend it to someone just wanting to casually change"). Lets fast forward to today, now, shall we?
http://appdb.winehq.org/ - list of the 30 most popular games that run in wine perfectly, near-perfectly, and close-enough-to-perfectly. I haven't played many modern games, but it looks like there are some goodies in there. StarCraft 2 runs perfectly. WoW (unfortunately) works great. I personally like to play Steam games on my computer and the only problem I have is Steam's custom-made GUI tends to wig out a big. And this is just the Wine games.
Now, before anyone says anything, I'm going to say: yes, I know that's not all the games. But not every console game runs/was ported on the XBox360. I think people would be shocked at how well things run in Linux these days.
Your mother has been erased by a mod because it's larger than 600x120