i've been through about 4 bands already, and most of them the same old thing happened. People got pissed about the songs, we got frusterated with eachother, nobody wanted to do it, it just sucked. But the band I am in right now, is one in a million. No arguements, everybody agree's on everything, we all play good together.
i think an essential start to a band is getting together with the members first thing and talk about what you expect out of the band experience. wheither you hope to make it big, or you just want to locally entertain, and also put some money in your pocket, if you wanna just write some origionals and put a demo cd together, the list is limitless. But make sure that everyone understands what each member expects in the band
then you should agree on a genre of music you want to focus on, and if you want to do origionals, covers, or both. (alot of the time sacrifices have to be made for the band to get along). for example, if you like this song by your favorite band, and you want to cover it, you bring it in and show the band, nobody else likes it... Just drop it, dont make it a big deal by saying "well I'm a member of this band and I want to cover the song!". Whats more important, having a tight, band that gets along, or a crappy one, just because you wanted to cover one song. ITS NOT A BiG DEAL!!
Make sure your always upfront about problems you are having, or things that are getting on your nerves. Make sure the band knows before it gets a little outa hand.
mainly man, have fun. Dont form a band because you want to make it big, because in the end that wont matter. If you dont have a deep relationship with your members you are bound to break up, and it would likely to be sooner than you would like.
HAVE FUN!! and write some kill music :)