I think knowing a little bit helps in evangelism purposes, as well as helping with not being deceived. I have to blow it up on my phone, but looks pretty detailed. Good guide. There was a really good book I read in the past that went into detail on different religions from a Christian view. It was really good. Ill have to try and look it up.
Christianity, Sects and Cults - Comparison Chart
Christianity, Sects and Cults - Comparison Chart