I hope your destination is not just Anchorage. It's just another city. There's a lot more to your trip. Take your time on the way up and explore. Canada and the Yukon have awesome places to check out.
Be sure to read the other posts on this forum for lots of good information.
The only things you need is the Milepost for history and maps; Mike and Terri Church's Alaskan Camping book which includes Canada and the Yukon, and the 2/1 TourSaver coupon book. One glacier cruise will pay for the book and you'll want to do at least one. We did the Stan Stephens out of Valdez and highly recommend it.
Also, don't load yourself down with reservations. There are plenty of places so stop and lovely boondocking spots, too. The only ones we made were for the July 4 weekend and 5 nights in Denali's Teklanika campground. Those were only made about 3 weeks prior when we could better judge when we'd be in the area.
Have fun planning!