Honestly, if you're having trouble with the first season, all you need to watch is basically episodes 1, 2, 7, and 12 -- that covers most of what you need to know for the later seasons. Season 1 was a huge stumbling block for me (watched the first 8 episodes, then went away from it for two years, then came back to it later. Season 2 has a great main storyline, but a lot of the filler episodes aren't that good. I wasn't really hooked on the series until Surprise (S2E13), so it can take a while.
Honestly though, if you liked other Joss Whedon stuff, this show is very Whedon-y throughout, so if it was the writing and especially the dialogue that got you for the other shows, you'll be just fine with Buffy.