Don't stress over what type of protein to use Jeff. Protein in any form is necessary for
muscle growth, so the protein you bought will
not go to waste. Genuine scientific research (not the garbage in advertising) has shown that just a few grams of protein consumed post workout will provide for positive
nitrogen balance which is what your body needs to repair itself post workout. Bodybuilders from the 50's to the mid 80's never used whey and they still got big. Workout, eat right, rest -- you will grow.