Rawfish;
Your question is impossible to answer. There are just too many styles and sizes out there. It has taken me 3 years to put togather a fairly adaquate supply.
As the others have said look at what you plan to tie and buy the hooks of that style from the biggest to the smallest used for the patterns.
I recently followed Jammie Caddick's advice and bought Mustad C49S(curved Caddis)hooks in size 8 to 22 for Klinkhammers(25 packs).
Most of my hooks come from H&H as Ron's deliveries are 2 to 3 days and I can buy a 100 pack for the cost of the gas to get to my nearest shop. If you watch your inventory closely H&H can be a real "Just In Time" supplier.