Collecting Autumn Leaves:  Gives lots of information on how to preserve leaves. Also has Templates that can be printed on which you can place your leaves.

Classifying Leaves: "I've got a leaf. Let's get started" is based on trees found in Virginia. Since we have many of the same leaves, it might help you to identify yours.

"Basics of tree I.D." will give you lots of things to look for when identifying leaves. I especially like the section on leaves.