Comrades - I always refer to the sun as my light source. But now I am looking for a source of video tutorials on use of speedlights, from soup to nuts -- starting with the absolute basics of 'how to turn this on', through correct flash exposing in various venues and fill situations, up to use of multiple flashes with the radio triggers (either canon or aftermarket.) Strobist seems too complex, and I want something geared specifically to thorough use of canons. Either free or for-pay. All suggestions gratefully appreciated. Thanks for your time.