Hi,I'm a landscaper (mow lawns part time)in northern NJ(Sussex county)and I'd like to learn about trees and the tree buisness.What can you suggest I do on my own,(books,videos,etc)to get some basic knowlege?I've used a chainsaw,but I know just because I used one dosen"t mean I know how to use one correctly.I have been reading this web-site for some time and am very interested in a career in the tree industry.I recently lost my full time job(I worked in a gun store/shooting range)and just found someone who will teach me to drive a truck so I can get a CDL B.Any suggestion please?Thanks for any help,RON K.