Its just like being a Wheat farmer, except it takes 20+years to grow the crop and you get to worry about weather, pests, taxation, and environmentalist, except you wear a tin loggers hat so limbs might not kill you.
Most states have a Small Woodland association. If you want to learn about the subject or find sales I'd contact someone who's a member. In residential work, I'd always make it clear that I was not including the valuation of emblements and always recommend a 'timber cruise.' I grew up in a county where half the kids I went to school with had fathers who 'worked in the woods,' as did mine and so did both my grandfathers. And the last thing my father would let me become was a Forester.