Cable cast on

For the right handed version I like Verypink‘s method, which starts 30 seconds in.

If holding yarn in the right hand

If holding yarn with the left hand, then Garnstudio‘s video is useful.

If holding yarn in the left hand

Chinese waitress cast on

This cast on is not only stretchy, it also creates a nicely chained edge. There are again many videos of it, this is the one by Knitfreedom is one of those I personally like best. One note – since the method really kicks in at the third “wrap”, I generally cast the first slipnot and work the first two stitches with scrap yarn, then start using the working yarn. In this way the cast on is all uniform.