The Digital Cinema Society's website is a bit outdated, but there are a number of free video workshops that may be worth checking out if you're interested in topics such as "PL Cine Lenses -- What Cinematographers Want and Need to Know" or "HD DSLRs for Cinematography." The links are non-embeddable Quicktimes, but there are a number of ultra-qualified presenters including reps from ARRI, Redrock, Sennheiser, Schneider, Zeiss, and more.
The Digital Cinema Society is a "nonprofit educational cooperative dedicated to the industry's informed integration of new technology." Most of their video workshops require a membership, including presentations on lighting, RAW workflows, underwater cinematography, and more; there are also a number of member discounts worth checking out. Membership dues are $30/year, but "if you are a student, or otherwise challenged to afford it, just send a note, and your membership will be complimentary."
