This post has a few links for online courses and other resources (even ... books!) which will help you get to grips with (cinema)photography, and especially as constructed through using DSLR cameras.
Its no freebie ($150 or over £100), but this looks like a useful option to consider if you want to go deeper into cinematography than we can cover on the course. Having looked at the 5 day course materials, available to refer back to after completion, I'm tempted myself.
MORE LINKS BELOW THE LINE