Steps for selecting a lawn care specialist
First you must determine if you're going to repair your lawn yourself. If you're going to do that, view the knowledge base article on How to Repair Your Lawn By Yourself.
If you're looking for a professional to do the work, you can find a local list of top rated professionals here. I recommend getting 3 in person quotes and picking the quote that has the best value considering price, your personal timeline, and your rapport with the professional.