Wrong deer photo? That's really bad form. Makes me wonder what else they got wrong.
Ah well, if it's the first edition, there will be a list to fix for #2ed.
Here, there's the Petersen's Field Guide to Animal Tracks. Lots of sketch drawings. Even to worms and insects. Take that along.
Learn to sit still for 10+ minutes, 15 is excellent. Don't freakin' move more than your eyes. Amazing how the forest wakes up.
Learn and practice making plaster castings. Carry the water and plaster. Always. Really fun things to bring home as trophies.
A good, framed casting of a Grizzly Bear footprint retails here for $200+