I really want to learn more. I think I have gooten pretty good at turf managment, watering, disease id, but I want to learn more. My back ground is in the turf and not the plantings. Is their any good online courses or books that will help out with plant Id, bug Id, disease Id. Their is so much I know but every time I turn around I see so much more I have no clue about. What books would be the best to get as well for reference material.