Cast On Thumb Method
Create a Slip Knot and place it on your knitting needle.
Wrap yarn tail around your left thumb counter-clockwise.
Insert the tip of your knitting needle under the thumb loop.
Hold knitting needle with your left hand and wrap working yarn arond needle counter-clockwise.
Pass thumb loop over and around the needle tip.
Pull yarn strands taut around the knitting needle to complete the cast on stitch.
Continue casting on with the Thumb Method until you have the desired number of stitches.