Watch season 1, skip 2, then watch 3 and 4. Season 4 is tops. Season 1 is meh.
I say skip season 1, skim 2, then watch 3 and 4.
Season 1's pretty different from the rest of the show, and season 2 re-introduces the characters, in a way. I mean, 2's not that great but at least it fits in with 3 and 4 better.
Watch all the seasons, they all have good episodes, but some can be really divisive depending your tastes when it comes to S1 and S2. S3 and S4 are much better than those too.