I really like  story so far's pop punk band from California 
Oh yeah! How long have they been around?
They formed in 2007, I listened to them cause they sounded like Blink-182
I haven't ever heard of them before, but admittedly it's not a genre I listen to much. Have they sold a lot of records?
Yeah they are pretty regional, they have released 3 records so far, but not a multi platinum artist.
What is a good song of theirs that I should listen to in order to get familiar with them?
In march of 2013 they released their second album "What you don't see". That was number 46 on the Billboard 200 you should start there.
Sounds good! Do they ever collaborate with any other artists, or do they just do their own thing?
June 18. This split contains one new original song, Clairvoyant, and a cover of Pinback's song "Loro". The band was featured on the cover of Alternative Press' March 2013 issue "100 Bands You Need to Know." The band played the entire Warped Tour 2014 on the main stage.
On April 24, 2014, The Story So Far announced they would be releasing "Songs Of", an acoustic EP on June 17 through Pure Noise. The record contains some acoustic versions of previous songs
'm a pool player, so they ask me, 'Haven't you done anything with your life except shoot pool? Haven't you ever worked?' I always tell them, 'Well, no, sir, I can't say that I've ever worked.' That always gets those rascals, 'cause they always ask, 'But how have you managed to live?' Oh, Lawdie, that's so silly. I tell them, 'Sir, I live like a tree – 3 percent from the