1. Never do business with realtors, you'll never make any money, at least in my area. 2. If the customer seems shady from the beginning, chances are they are going to be shady. 3. Put EVERYTHING in the contract, even the smallest detail, if you don't, it will come back to haunt you. 4. Take as many accounts as you possibly can, because everyone and I mean everyone is mowing grass. 5. You have to spend money to make money unfortunately..