First off, there should be someone where you work that will tell you besides your boss. Seek out a foreman or lead-worker and ask questions. Wet vs dry lumber. Wet is 3-4 times as heavy as dry lumber, and generally oozes sap or fluid. Generally has a...
At lumber yards or at lumber retail stores. Just check your local phone book and you'll see them listed.
Dig out the Yellow phone book and call all the lumber suppliers in your area, I may have some here, but it won't do you any good.