I am just a very raw beginner to the garden world. I have always had a "Maintainance free" garden back and front. Althrough I have potted some "flowers" here and there, I would like to have some nice displayes for next year. I also would like to try and grow some basice vegables in a small green house perhaps. Trouble is what do I go for to begin with, Plastic/ glass, wooden, metal???!!!