You can spend $200 a month on supplements but if your diet, training, water intake, and sleep arent in order - it wont matter. You're just pissing money away (literally) if everything else isn't perfect.
Solid Diet (hardest part and 70% of bodybuilding)
Multi-Vit., bump C to 2-3g/day, D3 to 1000 iu
Fish Oil (4-6g/day)
Creatine (Green Mag or Clout)
Post Workout:
WPI
L-Leucine
Carbs
There are a lot of other neat things but they are nothing on their own. Get this foundation going for a while and then try out some of the new/exciting supplements out there. Some of the non-hormonal hypertrophics can be pretty fun but they are useless if you're not on track. You'll come to realize most of this stuff is for entertainment value more so than actual permanent physical benefit.
Hey, its the hobby we love. It's worth it to me...
oh btw, AAKG and the whole "NO" craze is total horse ****. They are popular and people buy them so more companies keep marketing them. Anyone who knows anything knows they are laughable. Glutamine is also useless. All the studies are based on IV use. You don't absorb enough via Oral to make it worth it at all. I would also take the term "hard gainer" out of your vocab. That is mostly BS too. You are just fortunate enough (at this point in your life) to not get fat as easily as some. There are 2 main components affecting muscle gains: hormones and calories. Your hormones are in check, now just get your diet in check too. I hate to say it, but you don't "need" protein shakes to get big either. If your diet is in check you will be getting plenty of protein. Arnold didnt drink 6 ultra premium WPI shakes a day. He ate a decent amount of protein, had good genetics, and took his primo and dbol.
None of these things were available to BB's in the 70's. Those guys didnt even break 100g of protein a day! They knew protein was important but it wasnt marketed like it is today. In reality, its more important to eat a little protein more frequently than to consume a magical number per day.
Focus on slow, lean, quality muscle gains. At the end of the day thats all that matters anyway. Dont bulk your ass off and get all fat. Sloppy size is worthless size. It looks like ****. Someone who is 215 @ 18% BF looks like garbage compared to someone who is 190 @ 10%. Dont be one of those big bloated clowns who thinks they are huge. Anyone can overeat! You CAN gain muscle as easily as anyone else if your diet is setup right.
