Newcomers to Ubuntu have any number of problems, but some of them are fairly common. Here are three I see a lot, and easy ways to avoid them.
Misburning the ISO, or making a data CD with the ISO on it. If you’ve never burned an ISO to a CD, it’s important to get it right, or it won’t boot and you will have probably wasted a CD too.
An ISO is like a picture of a CD — if you could take a picture of the underside of a disc and store that on your computer, that’s more or less what an ISO image would be. Now imagine if you could take that same picture and somehow photocopy it to the underside of another CD. You’d have a perfect mirror image of the original, from start to finish.