Astronomy 161 - The Solar System
Astronomy 162 - Stars, Galaxies, and Cosmology
Review by Richard Jones: I realise that there are as many Astronomy sites (figuratively) on the web as there are stars, but I have found these site(s) to be particularly novice friendly.
Psychohistorian ‘s Discover! charts
Taki's 8.5 Magnitude Star Atlas
Wikipedia: List of constellations
Wikipedia: Maps of the constellations