Drinking from a firehose

AncestryDNA was only $100 and I did it as a birthday present to myself. I would like to take the other two commercial DNA tests, particularly because it would give me access to their genetic databases and because that is what I have seen recommended for those trying to identify an unknown parent. I would love to know who my father is and I want to know if I have other half-siblings (besides the ones on my mother's side). And being me I would also like to know if he raped anyone else. I hope he wasn't a serial rapist but I don't think I would be shocked to learn my mother was not his only victim. I should Google the statistics as I don't know how common it is to have only one victim.