I am new to DSLR photography and recently purchased a used D40 with the help of a friend. The camera came with the AF-S Nikkor 18-55mm kit lens. My friend was going to help me find the necessary accessories for the camera but he moved away. My question is this, I am struggling finding what I need because I do not yet understand the terminology used in trying to buy accessories, since I am a newbie. I don't know what will fit and won't fit the lens I have. When buying accessories, I want to buy something knowing it will work with my D40 and that I won't have to return, or be stuck with the item. With that said, I know I need/want some sort of strap for the camera. I do have a disability and walk with a bit of a limp, so something that if I were to fall, the camera would have the best chance of survival. Not sure if a neck strap or a over the shoulder strap would be best? I also need a UV filter for the D40 and a lightweight easy to use carrying case. Any suggestions on the items that will best suit my needs would be appreciated. I would also appreciate any assistance in knowing a good source for purchasing new or used accessories for the camera and any other tips/help would be appreciated. I'm not afraid to purchase used equipment as long as it does as described, is reasonably priced and is compatible with my camera. Thanks in advance.