Good guitar songs/riffs for acoustic/electric?

I have an acoustic guitar and I am teaching myself a bit how to play guitar and I want to learn some good beginner songs and I am soon getting a Squier SE Strat Guitar Pak With Sp-10 Amp Antique White for christmas ! :P So I would also like to know osme good easy guitar riffs / scales to learn and to improve my skills :D Thanks !!!