Hi Cara!
Thank you for sending in your question to the Walt Disney World Moms Panel.  Since you are a first time visitor, I highly recommend picking up the book "The Complete Walt Disney World" by Julie and Mike Neal.  It is a great book for first time visitors, as it is full of information and tips but is not overwhelming.  It is also a beautiful book full of color photographs.  It will give you a good feel for everything there is do at Walt  Disney World.
With regards to food, there are a lot of great Table Service (full service) and Quick Service (think fast food) restaurants at Walt Disney World.  I recommend picking out a couple of places in each park to get started.  To see the menu, including prices, for all of the restaurants at Walt Disney World, I recommend visiting the independent website AllEars.Net.  The team at All Ears does a great job keeping their information current with all of the changes at Walt Disney World.
That said, I do have some recommendations based on where my children, ages 12 and 7, love to eat:
    - Crystal Palace in the Magic Kingdom
- Via Napoli in Epcot
- Garden Grill in Epcot
- Sci Fi Dine In Theater in Disney's Hollywood Studios
- Whispering Canyon Cafe in the  Wilderness Lodge
- Chef Mickey's in the Contemporary
I hope this helps!  Write back with more questions!