Beginner's Luck - Advice for Getting Started
"In the beginner's mind there are many possibilities. In the expert's mind there are few."
Shunryu Suzuki
Carolyn Collins Petersen offers Top Ten Reasons Why Stargazing is Cool in another podcast from 356 Days of Astronomy.
Every experienced astronomer has an opinion about how to pick your first telescope. Here's a sampling of some prominent ones:
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Astronomical Society of Las Cruses includes a simulation of how aperture affects what you will see through the eyepiece and a nice observing basics page |
In my opinion, Jay Reynolds Freeman offers the most honest and complete advice on his website.
Jeff Setzer offers Telescope Tips in this podcast from 365 Days of Astronomy the daily podcast of the International Year of Astronomy.
In addition to the above, here are my humble opinions:

GOTO mounts (a.k.a computer controllers) deserve a special mention because they are controversial. Some feel that reliance on GOTO mounts prevents users from truly learning the night sky. They prefer that observers star hop to objects and thereby learn the layout of the sky. Others feel that the convenience of GOTO mounts allows users to enjoy the night sky faster and avoid frustration finding faint objects. I have a Autostar for my ETX-90, but more often I use the scope without it. The Autostar requires an alignment each time it is set up, which can be tricky to get accurate enough to confidently find objects. I do not need the Autostar if I am looking at a bright object, like a planet, that I can find with the red dot finder and finder scope. On the other hand, it is useful to find objects when sky conditions are poor in my suburban location and dim stars are swamped by sky glow. If I did astrophotography, the tracking ability would be indispensable. Should you pay extra for the convenience of the GOTO, or should you spend the money on more aperture? Consider your own priorities, goals and needs.
So you bought a scope, but you're have trouble finding things in the sky. Top Ten Telescope Mistakes for Beginners pocast from the IYA 365 Days of Astronomy will help. In less than 15 minutes, this podcast will save you months of trial-and-error figuring out what you're doing wrong.
The Astronomy Connection and Cloudy Nights have a variety of articles for beginners about observing, equipment, clothing, charts, etc.
See the Hardware page for more information on telescopes, homemade accessory projects, vendors and building your own telescope.
See the Bookshelf page for recommended books for beginners.