For identification tips, photos, songs, range maps, equipment, much more, start with All About Birds, from Cornell Lab of Ornithology in Ithaca, N.Y. See “Gear Guide” link for information on buying binoculars. Their Frequently Asked Questions page is fascinating.
The right binoculars are essential for birding. These links offer good advice on buying binoculars:
Cornell University in Ithaca, NY and other organizations offer webcams of birds on their nests. You can also Google terms like "osprey cam," "peregrine cam" or "owl cam."
Also see the tab above with local birding organizations.
A checklist of bird species for an area is helpful to record what you've seen. Here are a couple of sites to know about:
Domestic cats kill millions of native birds each year. Here's a brochure from the American Bird Conservancy.
See these sites for bird box plans, placement, and more. Bluebirds, Tree Swallows and many other insect-eating birds use nest boxes.