Just back from my last overnight trip in the Adirondacks. I'm sad to leave this beautiful area. I already decided that I need to come back sometime in the future to hike the NPT and do the other hikes I didn't get to do this time round. I wish I had some comparable hiking opportunities at home...
The High Peaks is the "go to" spot because of the mountains and Lake Placid Village. OTOH the park is full of places to hike if you are not focused on climbing and crowds. There is a shelf full of books on hikes in the area. Ditto maps.
I assume you are going in the east side. If you do come out the SW corner through Old Forge and you will get a pretty good tour of the area. There is a lot more to the park than the high peaks. You can get maps and books at any of the gateway villages.
I have rented canoes from these guys the last two summers. The Kevlar are the bomb! Very light and carry a lot of gear. Their suggested routes are awesome.