Authentic dad hit nail on the head. Keep your overhead low sell the 1st 10-15 jobs and keep your figure on the pulse. Build solid relationships, also storms can be a double edge sword. Money changes people in different ways, be careful when highering just anybody to sell and represent your company. You will make some mistakes, though they can be minimized if you stay open to learn. I do mostly flat roofs, HOT BUR systems here in Palm Bch. Another good resource is ROOFING CONTRACTOR magazine, it's free. Though this forum , I've found to be the best when it comes to insurance claims.