10-15 players 1500 in starting chips and a rebuy for another 1500what should my blind strucutre look like

Don't know how rebuys affect the blind structure (I avoid rebuys and add-ons), but as a rule of thumb I would say start with blinds of 10-20 and double the blinds every half hour. Personally, I like to go from 10-20 to 20-40 to 50-100 to 100-200 to 200-400, etc. I race off 10's and 20's once the blinds go to 50-100, and race off 50's when the blinds go to 100-200.