During its original first run on syndicated tv, I started with season two. I did not have the opportunity to watch season one for the first time until after the season three finale.
Still turned out to be a big fan of Babylon 5.
Same here, and It worked out fine. I got hooked on the show starting with the first episode of season 2, which when I went to buy the show, I thought was season 1 and was surprised to learn there was whole season I had missed.
Although, as mentioned season 2 starts with what's essentially a reboot so there will be no trouble starting with season 2. Season 1 was also the weakest season in my opinion, not bad by any means but the rest were better, so starting at season 2 might also be advantageous.