Speaking from experience, Roleplaying is a lonely hobby when you try to do it on your own.
Best thing you can do is find someone to learn it with. If you can't find anyone in your area who already games I would advise you to try to get into one of the play by post games on this board. It is much easier learning to make a character when you have someone to walk you through it.
But if you can't find anyone, the easiest way to learn is to use the Players Handbook to go step by step through the character process, recording it all on a sheet. Ignore most of the rules for the moment except as how they apply to charact creation. After you have made about five characters step by step, you should be able to do them easily on your own whenever and understand what the numbers all mean.