Well, to start off, here are a couple of resources that contain lots of information about LOTS of religions.
http://www.sacred-texts.com/index.htm
http://www.religioustolerance.org/
As for my 'beliefs', they're simple and not very interesting.
As far as creators, gods, afterlife, spirits, karma, kosmik krazy glue, whatever: I don't know and I don't care. It's a simple system of 'beliefs', because It doesn't require any special training, rote memorization, or even belief.
It takes too much energy to worry over what "might be", and I have just enough imagination to realise that there is an infinite quantity of "might be" to divide my very finite time as an animate entity on.
If there is an 'ultimate truth', I am fairly certain not to ever find it, and it's also fairly certain not to be found in any existing religion, being the weak, inbred things religions tend to be. If I think I've found an 'ultimate truth', I'll share it with you, but I will almost certainly be self deluded.
For instance, one workable story line is that every creature with so much as a spark of awareness shares the same 'soul', spanning space and time (either reincarnating serially and wrapping around the end of time, or split up into shards that run concurrently). If you 'do unto others', you literally are doing unto yourself. It's catchy, simple, elegant, even marketable, and in all probability false.
I tend to view ideas as discardable. I think them up, share them, but don't attach too much to them, because for every good idea I have, I tend to have a LOT of bad ideas.