Are you busy in 2017? If not (or even if so!) we invite you to join Strobist's upcoming Lighting 103 course live, when it arrives in January.
As with Lighting 101 and 102, L103 is completely free. There are some minimum gear requirements (sorry, I can't afford to give each of you gel packs.) But as with L101 and 102, there is nothing crazy expensive.
The first section of the course will debut in mid-January, and new lessons will post bi-weekly after that. Expect the course to last for most (if not all) of the 2017, as there are already a couple dozen lessons planned.