Cooking with Sloan website tutorials
http://cas.sdss.org/astro/en/help/cooking/
How do I get an image, spectrum, and other
info for my favorite object in the SDSS area?
http://cas.sdss.org/astro/en/help/cooking/gener
al/getimage.asp
Are the SDSS data for a given object reliable?
   Consult the object’s flags to find out.
http://cas.sdss.org/astro/en/help/cooking/gener
al/flags.asp