Evolution is right on. Amino's are nothing but free-form protein. Typically you won't need them unless you are training EXTREMELY hard; and even then the need is questionable. BCAAs though, can be beneficial.
As far as the multi, taking them ever 12hours or so is perfect. That way, as AngelKae says, you will maximize your chance at absorption. However, as Evolution says, there are better multi's out there... WAY better!
A couple of things to look for when choosing a multi is the choice of ingredients. Does the multi use chelated minerals? Where do the vitamins come from? are they synthetic or from whole food factors? Is there a full antioxidant compliment or not? All important, though maybye subtle, factors in your decision.