He suggests everyone be a general contractor. These certifications are not expensive to obtain. An impressive list of credentials instills confidence in your client. The expertise gives you confidence in yourself and that's always apparent to a client. There's no substitute for just doing it, he says.
Nothing beats on the job training.
He suggests that new inspectors train with experienced inspectors, even if it costs them. He is an experienced trainer. Be thorough and honest, treat people like you'd like to be treated, be professional in your manner and appearance, and you will stay out of trouble.