I pretty much self taught myself for about 4 years then i came to GT and I also took private lessons for a few months to refine some things but it wasn't much. If you haven't done it yet you should take a look at this page. http://www.guitartricks.com/guide.php
If you can muster $5 a month the highbandwidth video lessons here are more than worth it.

Here is where tab is explained. It is easy to understand.

http://www.guitartricks.com/lesson.php?input=3554

If guitar is something you like then go for it. If I can learn to play anyone can.