You are on the right track in looking for the info on the company's equipment. I did a google for "cessna caravan gouge" and came up with some good returns. Here is one that could be useful for Fri.:
http://www.atlasaviation.com/checklists/cessna-caravan/c208bproc.pdf* Learn about the company but not so much that you look like a stalker.
* You are selling yourself to them. Be ready for the "You don't have much experience..." type of comment.
You dont want to agree with such a statement without minimizing it. For example: "You are correct that I am rather low on total experience, but you may have noticed that I have flown many and varied types a planes and they have all required studying and techniques which I have found comes fairly easy to me and I look forward to the challenge of learning and operating the equipment you are operating.
* Remember that everyone at the company could be interviewing you. That includes all people you walk by or talk to. The influence of a Secretary or Administrative Assistant, is often large. Humility is key.
Good luck.