#1
my friend started playing bass and asked me what songs he should learn

ive been playing guitar for three years and i just told him to learn the ramones songs i learned when i first started playing.

what else are some bands with easy basslines for beginners?

no punk. he is pissed off all i could tell him to learn was the ramones
#3
Its always more fun to learn song you listen to. You'll also be more familiar with the songs and be able to learn them easier than a song your learning just because someone on the internet said you should learn it. I can't contribute any songs at the moment because all thats coming to mind is punk songs right now.
#4
Green Day some good stuff. It's not super easy, but it's not really that challenging either. The Clash has some cool stuff as well.
#7
He could check out some Arctic Monkies stuff, their bassist plays some nice lines.
#8
yeah, just get him to look up bands he likes anyway, he'll be more motivated if he's playing something he enjoys.