Here's yesterday's media briefing (audio stream) that explains what this announcement is all about, on top of already linked to news article. Many other links are available on Kepler Planet Bonanza press kit, including presentation slides (PDF, 27MB warning!).
The table of confirmed planets is published on Kepler pages, including planet characteristics, their orbits and caracteristics of their stars. It also includes further links:
One thing to add, in case it isn't obvious to some, is that most of these exoplanets are far too distant to us to attempt any direct imaging, so they're detected as they transit in front of the star they orbit and the intensity of detected light emitted from it temporarily drops. Knowing duration, intensity and periodicity of these dips, we can deduct the candidate planet's orbital period (distance to star and velocity), inclination, eccentricity, and other orbital elements, and through known characteristics of the star they orbit also their size, mass and surface temperature estimates. This is relatively easy and reliable with quiet stars, but a fair bit trickier with stars with irregular activity patterns.
Other links of interest: