Hi, Helena! I love the month of November at Walt Disney World! Of course, I love any month at Walt Disney World, but November has lighter crowds, cooler temperatures, and it's generally a pleasure to walk around the theme parks at that time of year.
The best place to get information on the Walt Disney World theme park attractions is at
www.disneyworld.com . If you click at the top of the page where it says "Discover", you'll see a drop down box that lists all of the theme parks. You can click on each theme park, then when you get to that park's page, click on the left where it says "Attractions". There is a nice overview of the various attractions that are available. At seven, your son is a great age for some of the best rides! He'll probably love things like Buzz Lightyear, Big Thunder Mountain, Toy Story Midway Mania, the Indiana Jones Stunt show, and so much more!
As for which park to do which day, that can really vary. The Magic Kingdom is the centerpiece of the Walt Disney World resort, so it's a good place to start, although some people prefer to save it for the last day. The Magic Kingdom also has the most rides, so it might be hard for some kids to go from the Magic Kingdom one day to Disney's Hollywood Studios the next. If I had to put an itinerary together for my family, I would probably do the Magic Kingdom last, and work my way up to the excitement. I'd start with Animal Kingdom, then do Disney's Hollywood Studios, EPCOT, then the Magic Kingdom. We spend the least amount of time at Animal Kingdom, and the most at the Magic Kingdom, so we build up!
Have a wonderful trip!