I lived there 5 yrs John. Go to www.themilepost.com. You MUST get a "Milepost". It's an annual paperback (get the 2005 version), about as thick as a small town phonebook, filled with all the info you could ever want, including literally a mile by mile description of every road or railway you might find yourself on. My personal favorite trip was on the state ferry system. We drove a motor home (rentals abound) onto a train that took us into Whittier, then from there over to Valdez on the ferry, then up to Denali national park.
you can't talk yourself out of problems you behave yourself into