One reader asked me about the custom settings I use with my Canon EOS 1D Mark III. Because my use of the 1DM3 is likely very different from that of other photographers, I’m not sure how useful they will be, but you can download them if you want to get started that way.
After downloading, first unzip CAMSET01.CSD.zip to CAMSET01.CSD. On the computer, copy CAMSET01.CSD to the top level of the storage card. Insert the card into the camera, and use the camera’s command to load them (found at the top of the 3rd menu from the right).