How to Do a Backwards Loop Cast On
The backwards loop method is the easiest method of casting on, but the edge might not be suitable for all projects.
With the slip knot on the needle, wrap yarn around your index finger as shown. Insert tip of needle in loop.
Remove finger and pull yarn gently to snug loop around needle. If loops on needles are too tight, you will not be able to knit into these stitches, so practice until the loops are consistent.