First and foremost: Never look at the sun directly. Your retina does not have pain receptors, so you'll never feel it as the sun's blazing glare fries your eyes.

Astronomy clubs, universities and planetaria around the country will have special glasses you can wear. If all else fails and you just have to see it with your own eyes, go to a hardware store and buy #14 welder's glass. That's the only glass dark enough to protect your eyes. Or you can use the old hole-in-a-piece-of-cardboard-trick

Sky & Telescope magazine has an excellent go-to guide, where you can learn more about how to safely observe the sun. The entire United States will be able to see at least part of it, while Australians, lucky beans that we are, get to see the entire thing, except if you're in WA.

If it's cloudy, plenty of observatories are planning live webcasts through various solar telescopes. NASA will be webcasting from the summit of Mauna Kea in Hawaii. 

The Surveying and Spatial Sciences industry in association with the Astronomical Association of Queensland is hosting a Livestream with cameras from around Australia.

Slooh will host video from Australia, Japan, New Zealand, Hawaii, Norway, the US and Mexico.

The University of Queensland has a Ustream here.

The Exploratorium in San Francisco will be webcasting from the Mauna Loa Observatory.