A few days ago I visited cambridgeincolour.com which I haven't been to in years. I went there looking for some good quality online resources for a online Digital Photography class that I'm building for my local high school Technical School. I remember being impressed with the quality of the photography tutorials the last time I was there. Wow has this site ever expanded in the last few years! It now a really extensive bunch of high quality tutorials.
CambridgeInColour.com run by Sean McHugh, a Cambridge PhD student that has done some amazing work putting together very nice, detailed tutorials on a whole range of photographic essentials. The remarkable thing about these tutorials is their depth and attention to detail. You can find this kind of material at other sites but the quality and detail of these tutorials is amazing. Just what you'd expect from a Cambridge PhD candidate! Thanks Sean!
I highly recommend Sean's site whether you are brushing up refreshing your knowledge of photography essentials or learning it the first time. Fantastic site!