I've been collecting arrowheads since I was about 9 years old living in the town of Indian Springs Nevada. Indian Springs is in a desert environment and at least back then it was easy to find evidence of Indian activity (flint chips and pottery shards) on the surface of the ground. I now live in Houston Texas and still hunt for arrowheads when I can.
Some of my particular archaeological interests are:
Texas, Oklahoma, and Southern Nevada Archaeology
Clovis and Pre-Clovis Archaeology
Colonization of Americas
Early Man (Cro-Magnon and Neanderthal)
If you have similar interests or want to look for arrowheads with me let me know.