Greetings. I'm new to the world of DLSR's...I've been using a point and shoot Nikon for years (back when a 4mp camera was popular. The camera I was using, had many lenses available so I bought and used them all. Also available was an underwater housing. I started doing shallow diving (rivers and ponds). Now...I've retired from diving, and would love to learn DLSRs and post processing. My interest is B&W of old buildings, train trestles and actual trains. I also believe there is a "nitch" in photographing the graffiti on rail cars, having the pictures printed up as tiny decals and sold to model railroader's to add realism to their rolling stock. I have a nice Canon T2i with 5 lenses. the 2 kit lenses, (18-55, 70-300). I've added the 50mm, 100mm macro and a 12mm-28mm wide angle. Any help or suggestions on PP software for a simpleton like myself would be great! I'm so glad to meet everyone here. respectfully trainspotter.