What are some easy-ish songs on guitar?

[Bridget The Strange]

I've been playing guitar now on and off for about 6 months.. I'm struggling to find some good easy songs to learn on guitar, which is why i give up all the time. me and 2 friends are about the same level and we want some new songs to learn. Any genre song will be okay.

I want something more challenging than a simple rift like Smoke On The Water or Seven Nation Army. Although, anything will do.. more practice i get the better i'll progress.

Thanks