Has anyone learnt to crochet 'online'? What makes a good online lesson or workshop.

I've noticed that there are an increasing number of online workshops available - including even video's on YouTube!. Has anyone looked at the crochet videos on YouTube?

A couple of online workshops - Crafty Daisies are running a 12 week learn to crochet course, and the UK Yarn manufacturer, Thomas D Ramsden have some excellent lessons here which include really clear line drawings along with a helpful hint for left handed crocheters (look at the line drawings in a mirror to reverse them).