Hi, Carolyn! What a wonderful vacation it sounds like you're planning!
There is a ton of information on the dining plan available at your finger tips. If you click this link
Disney Dining Plan and look to the right side of the page, you'll be able to check out the brochures for each type of dining plan. This will give you a comprehensive list of the restaurants that participate with the dining plan - and there are a lot! You'll be able to enjoy character meals, signature dining experiences, and snacks from around the world!
As soon as you've decided where you'd like to eat, make your dining reservations! Some restaurants do book in advance (especially some of the character meals, like Chef Mickey's and Cinderella's Royal Table), so you want to make sure you have your reservations made for the meals you don't want to miss!
Have a wonderful vacation!