Call around to all the other home inspectors, go to organization meetings if possible, you are looking for a successful inspector who is thinking of getting out of the business in a year or so. Ask him if you can ride along and sit on his shoulder during a few inspections, meet people, but do all this with the idea that you will pay him for his company name, phone number, and website when he does retire. If you are lucky, you will meet up with someone who will agree to that and also send you their overflow and that can get you started. Your reputation for doing a good job will get you more work than anything else, so ask people to rate you on whatever website they can rate you on - Angies List, Yadzooks, Yelp, Google pages, etc. Good luck, it is tough to get started.