Get a Copy of the Milepost and read it...It's about all you need.
In addition ANY of the good Guidebooks on Alaska, Moon, LP, Fodors et al will help steer you to the things you are most interested in and supply some good tips on interesting places to eat etc.
In all due respect to the Forum and it's many knowledgeable members, it can be a clunky, hit and miss sort of time consuming way to get sometimes very biased and sometimes very good info.
A good guidebook and the Milepost have all the info you need in one easily useable place.