Here are two of many articles to get you started, one for crochet and one for knits:
Rabbits, Math, Crochet Color Striping, and the Fibonacci Sequence
BY: CONNIE LEE LYNCH, POSTED ON JANUARY 19, 2018
You can find classes using this technique on YouTube, Craftsy, Stitches Events and Vogue Kinitting Events. There are lots of patterns on Ravelry as well.
Hope this helps.