There are some people who deserve a lot more credit than they receive, David Hobby being one of these people. I met and spoke to him very briefly in late September at the POPUP event held in London. What struck me most was his down to earth personality and genuine willingness to spare his time to talk to people. David has shared so much of his knowledge and time over the years and has had a very big impact in helping me with my photography as I have read Lighting 101 and followed him on Twitter. Anyway, some of the most useful info he has created has been compiled into a PDF by a guy called Michael Turcotte who also deserves a big thank you.
So, if you are interested in lighting and off camera flash and have not heard of David Hobby, Strobist or Lighting 101, this PDF will get you hooked. Link below