It is very, very easy. I was a beginner knitter and then I wanted to learn cables, and it is seriously cake. There’s nothing to it except bringing in a cable needle and knitting stitches every so often onto the third needle rather than the one you’re usually knitting on to. I made a cable headband, it was my first cable project, and you actually only had to use the cable needle every 6 rows I think, and it (obviously) resulted in a completely normal looking cable which totally blew my mind and fascinated me. But yeah, it’s really easy. No, you don’t need a book, or video, or lesson. :) The pattern I used just said “K3, P3, K3 onto cable needle…..”. And that was all there is to it.