Astrophotography is one of the most complex types of photography, blending artistic talents with deep scientific understanding and technical ability. So, if you're just starting out, it can be a complicated topic to get a handle on—but this video should help.
The most important thing to consider is, perhaps obviously, your telescope. In this half-hour long video, Forrest Tanaka takes a look at the common kinds of telescopes, and explains which ones will be appropriate for your purposes. Then the only thing left to do is to buy one—and practice. A lot. [YouTube via PetaPixel via Reddit]