I recently bought a Nikon D300 (a MAJOR upgrade from my P&S) at the time I got the kit which included a 18-200mm f/3.5-5.6g ED-IF AF-S DX VR lens. The problem is that all of that is like reading a foreign language. I would like to shoot professionally, but I am learning the ropes all on my own. To get to the point I would like to purchase another lens that would be appropriate for weddings. I have tried to research lenses on my own but the information is so scientific, I just need someone to tell me in plain English what lenses do what and why. Cost is not a huge concern, I would like to stick with a Nikon lens, I don't want to go cheap now and have to upgrade later. Thank you in advance!