(4 weeks ago
NASA's website has details on when the eclipse starts, and provides an online live stream of the event. Also, YouTube has several live streams.
For 4 hours, the moon will block the sun and pass across much of the country.
To know the exact times the total or partial eclipse will be at its fullest in your area, TimeAndDate.com lets you search for your town. Enter your city name (or zip code) in the box on the right, and press "Go". Their site is overwhelmed with traffic, so it could take a few tries.
Remember, never look at the sun with your eyes. Eye damage can occur in seconds, and could cause serious damage or blindness. Eye damage from the sun can be delayed, so it may be a few hours before you realize eye damage has occurred. Additionally, Your eyes may not be protected when viewing the sun through the camera on your phone or a GoPro. Those lenses will not be damaged if you try (according to USA Today and Apple), but your eyes trying to capture the right photo could be damaged when trying to get a clear picture. If you use a camera or telescope, do not look at the sun through the eye-piece without proper lens filter. If you use a camera (SLR camera or other similar camera), do not point it at the sun without a proper filter. As this video shows, it can melt and burn your camera in seconds. Just imagine what can happen to your eyes if you try to look at the sun without a filter. If you are in a place of totality (the moon entirely blocks the sun), you can look at the back-side of the moon for the 2 minutes that it completely covers the sun. However, once you see a tiny bit of sun peek through, be sure to look away immediately to avoid serious eye damage. Safety goggles need to be certified for eclipse viewing, or you risk serious eye damage (including blindness).
If you have no eclipse glasses, Share glasses with other people. If you go to a viewing party, people may share their glasses with you. The eclipse lasts for hours, which is plenty of time to find someone to share glasses with. NASA shows how to make an Eclipse projector. This is done by cutting a hole in a piece of paper or cereal box (or cracker box), and takes about 10 minutes to make. Put the sun behind you, and view the light cast by the sun. Here is a PDF file with more instructions. If you are lucky enough to experience this event, you will see day turn into night (the stars will appear), then change back to day.