I think the message boards on this site can be a little overwhelming for a first timer. Certainly the rest of the DIS site is an excellent resource.
I suggest putting your tax dollars in action. Go to your library network and borrow
Walt Disney World with Kids YYYY by Kim Wright Wiley where YYYY is 2011, 2010, or 2009, but you don't want to go too far back in years. I think the titles of the books are now Fodor's Walt Disney World with Kids. If you search by author name, you'll find it.
What I liked about this book is that it rated each ride with a child "scare" factor, a rating of how fast the queue moved, and how long the ride was. It also rated the restaurants by child appropriateness and cost. The book makes recommendations of appropriate rides by child age.
I recommend reading the book as a general overview, and then use this website for specific information on park times, parade times, and specific questions you have about particular attractions.
Here's a link to the book on
Amazon. I suppose any general book will do fine. I think the point I'm trying to make is, read a book first to gain a general understanding, then use this site as a supplement. That worked best for me.