I have been a Ubuntu user for around 3 years now. I have been playing with it since 2008, but I have recently been using it as my main operating system. I have experienced a few glitches over the years, but Ubuntu is by far one of the best OS's if you have the right hardware and setup.
Now I am using Ubuntu for most of my school work and all of my audio and video processing and editing. Ubuntu works amazingly well on my 7-year-old Dell laptop. If you have a newer computer, it will run wonderfully.
For this instructable, you will need:
A Blank CD
A CD Burner
A Hardrive big enough to hold Ubuntu
This particular instructable is for Ubuntu 11.04. The things in this 'ible should work across most versions of Ubuntu, but I cannot guarantee that. In Ubuntu 11.04, a few things changed from the older versions of the OS.
If you don't feel comfortable doing this, invite a computer-savy friend over to help you out a little. Enjoy a glass of lemonade with your friend and have a wonderful time installing your new OS. I am not responsible if you mess up your computer. You either did something wrong, or you didn't follow my instructions correctly. I highly recommend you back up your computer on an external hard drive in case your computer loses power during the install or you accidentally mess something up.
There are many ways to install ubuntu other than the CD method. There is another instructable that discusses the Wubi method. I have no experience with that kind of install, but I hear that it is much simpler. You may want to consider Wubi if you are uncomfortable editing a few settings on your computer.