John,
I'm not sure if you're NEW to working out all together or not, since you mentioned starting in April. You'll find that even in a 6 week time frame, you'll see muscle growth. But nothing happens overnight. Even the pro's work their bodies for years before they compete. There's a rule about letting your muscles rest for 72 hrs after a good workout. And I'm in total agreement with that. Here's an example of my routine:
Monday: Chest, shoulders, triceps. (push exercises)
Tuesday: Back & biceps (pull exercises)
Wednesday: Legs (push and pull but BIG muscle group to work)
Thursday: same as monday
Friday: same as tuesday
Saturday: same as wednesday
Sunday: what, are you kidding?! get some rest!
You'll see that from the time I work out on monday to the time I'm working out on thursday.. 72hrs has elapsed. You're still getting a great workout without pushing your luck. Muscle only grows during the REST stage. That's why it's 72hrs between workouts.
As far as suppliments go...
1) Creatine: there's many different flavors (kinds) of this monster. definately do your research on this as you may be wasting money. As a rule, it allows you to add water to your body and bulk up cell volume to get more out of your workouts. This may also have a bulking effect... aka "water retention".
2) Glutamine: good for recouperation after a workout. the down side may be it's got carbs in it.
3) Protein shake: You mentioned taking it 1-2x a day. Guess what... lol... most protein shakes are FULL of sugar. Why do you think they taste so good?! I recently grabbed this from my local GNC...
Perfect - Low Carb - Isopure (dutch chocolate)
serving size: 2 scoops (8oz)
calories: 210
fat: 0g
cholesterol: 5mg
sodium: 320mg
carbs: 3g w/dietary fiber of 2g = 1g carbs NET
protein: 50g !
It's full of vitamins and minerals too. $50 retail but I got it for $35 w/the dumb GNC gold card. It's got 21 servings per container, so it'll last a little while too. The flavor is like mild chocolate milk. U mix with spoon in water (blender optional). Bottom line - tastes good.