Local Sideral Time from the US Naval Observatory. A very useful link. Enter the appropriate RAS Observatory Longitude and you can obtain the local sideral time. Very useful for seeing what is up and what is close to the meridian. Make sure of the E or W designation appropriate to the observatory!
Steve Orlando’s astrophotos. Steve is a RASO member. This site is excellent because he furnishes detailed exposure data with RASO equipment. Highly recommended!
Al Kelley’s Pages. A excellent basic manual is available.
Colgate University Astronomy Resources. A wealth of information! Not only for CCD.
Martin Nicholson's ICRAR site. Martin runs the International Consortium of Robotic Astronomical Research, a GRAS/RASO partner. You will find man interesting research projects and an excellent demonstration of who can be imaged by beginners at the RASO facilities.
The CDS Databases at Strasbourg. Essential databases including Simbad, VizieR and Aladin. Provides access to just about any catalogue plus images. See the PDF file posted by Ed outlining how he uses these resources for his double star work. Essential for variable star and exoplanet work also.