C-Stands. The most useful thing on set, since the invention of a PA. (production assistant)
So, here is a great little tutorial about how to use one.
Watch and learn

More Great advice about c-stand usage, tips and tricks

C-Stand Etiquette
This is sort of lame, but the instruction is accurate.

C-Stands 101


Time to purchase your own c-Stands?
Order one here

Impact C-Stand Review

Impact C-Stand Review (Photo credit: Dave Dugdale)