Yeah there are strings, I currently use D'Addario Extra Light strings on my acoustic, they cost me 350/-
Start learning scales here
http://www.cyberfret.com/scales/basic/index.php
Ibanez is one of the best companies of guitar worldwide, many great guitarist made their signature models through ibanez itself. And yes, the guitar i mentioned above can be used for any and everything, just pump them up with good amps later when performing live. For home practice purpose use Marshall MG10CD, a very very nice amp.