Amazon is a good place to start to find a refurbished Nikon camera online and they offer some very good prices for a refurbished Nikon camera online as well
Go to Amazon.com and type in Nikon D90 camera. Click on the model you are interested in and you will find customer reviews. You can read them over and decide if this is the camera for you.
The Nikon cameras from what I have heard is a good and expensive camera. If you want to find out more reviews regarding this camera then you would have to visit the Nikon website.
A good place to find a digital camera made by Nikon would be Staples. They have tons of choices and I bet they have digital cameras made by Nikon. So go take a quick look.
You can find all your Nikon needs and all the accessories for your camera at http://www.nikonusa.com/Nikon-Products/Photography-Accessories/index.page. Amazon will have them at a cheaper price.
The best source to find out more about what Nikon offers is to go directly to the official Nikon site. Here is the website for Nikon: www.nikonusa.com/
Your Nikon Coolpix Digital Camera should have included an instruction manual packet. If you lost yours, the Nikon website will probably have some online instructions.
I couldn't find it in the manual, but others have said "set the date and time". I can't check if this works at the moment (my wife has my camera in Prague, and I'm not there), but it seems like an intuitive meaning for the icon. Would be nice to have it in the docu, so RTFM would actually lead to an answer.
Lenses for Nikon camera can be purchased from any local camera stores. However, one can find a better deal on some online stores like eBay and Amazon.
Go to Amazon.com and type in Nikon. It will bring up all the varieties of Nikon cameras available for purchase. You can then read a wide range of customer reviews, to help you with deciding which camera is best for you.
One can find a tripod mount that works with a Nikon SLR camera on various websites such as 'Amazon', 'Ebay', 'Turtleback' and 'Miniinthebox'. These sites will deliver their products at your home.
You can purchase a relatively cheap priced camera bag from Nikon from several online retailers such as Amazon, eBay, Argos, Littlewoods, Very and John Lewis.