The essentials are always worth money if your expecting to pursue a bodybuilding lifestyle:
Protein Powder (you chose your brand)
Multi-V (because a bodybuilding diet does not give you everything you need)
Not essential supps but definitely worth getting if you can afford:
A good creatine (for that fast energy source needed for intense sets, I prefer con-cret)
A NO drink or powder (I prefer consuming half an endorush before every workout other than leg days)
BCAA's are good but not essential. IMO if your taking a protein drink and consuming various types of protein sources from your diet you do not have to have this, but still worth buying if you can afford.
All fat burners on the market are worthless unless you need a little energy boost, but since ECA's have been taken off the market they do not even do that anymore.