Learning standard notation will open a lot more doors for you in the long run. Sure you'll be able to do a lot with tabs alone but you'll get blocked at some point.

Notation gives you accurate time duration of each notes. It is a lot easier to understand a song with notation than tabs. Here at GT we use image tabs which gives you both.

I suggest you take time to go over Christopher's tutorial on Reading music.

http://www.guitartricks.com/tutorial.php?input=271
http://www.guitartricks.com/tutorial.php?input=318