Hummus is super easy. I know there have been dozens (I'd daresay hundreds!
) of recipes posted here. Do a search on "hummus recipe" and I'm sure a ton of them will come up.
At it's most basic, hummus is beans of some kind (traditionally chickpeas/garbanzo beans, but can also be white beans, black beans, great northern beans, etc.), mixed with garlic, sometimes tahini, olive oil, and lemon juice. There are TONS of variations though.
I make mine with great northern beans and lots and lots of garlic.