#1
any tips on playing this bands music or anything similar? like sublime or operation ivy
#2
I'm assuming you want to play music like theirs?

Take it to the "Musician Talk" forum. When you're there, I would suggest you ask about the theory behind those bands. Also, learn some songs of theirs and learn some of their licks and incorporate them into your own style. Try to see what they do in their riffs. Ask yourself stuff like; "Do they use a lot of power chords or do they use more single notes when creating rhythms?"

That's what I would do.