I want to find really good photography courses as computer based
training through the Internet. I see lots of workshops online as
emailed communications (such as www.betterphoto.com and
www.photoworkshops.com) and promotional programs by camera and printer
companies (like Canon and Epson). As an advanced amateur, I want
serious courses that I can take from a reputable school, institute or
photographer that I can take 24/7 online. Where can I find these
courses and what is the range of prices for these courses?  I would
greatly appreciate as many places as possible to choose from. Thank
you!