Hey guys! Still getting used to the mods, and so far all the tutorials or posts I've seen on this are outdated! I've tried the AwesomeMod and the Controller thing, and I still can't seem to figure out how to edit family relationships? I decided to make a new sim and I added him to my household, but I would like to make him my sim's son! I don't really wanna have to go through marrying and having a kid with another sim! Haha.

You can do that with NRaas Master Controller, plus the MC Cheats module. See the second post on this NRaas page

http://nraas.wikispaces.com/Relationships