I am a relatively experienced weightlifter, as I am forced to do it because I play D-I football. I would agree with the workout that your bodybuilding friend suggested. It is a simple workout 4 day workout routine that will get you into the grove. As for supplements, I would suggest taking just a basic whey protein. You don't need anything other than that at this point, as you are only beginning and have not reached a plateau yet. Good luck!