In Knitting Brioche - The essential guide to the brioche stitch it is said, that there are four ways of making brioche. two methods invole working with yarnovers. the other two with working the stitch below. I prefer the latter method because I find it more managable and less confusing.
Unless you are determined that it be fisherman's rib, I'm going to suggest that you do brioche instead: they're very similar in appearance, despite having very different methods of construction, and once you get the hang of it, brioche is faster and easier, because you never need to purl — you slip every alternate stitch (paired with a yarn-over) and then knit those slipped stitches on the other side. And when you get good at that, you can try two-colour brioche, which is mesmerizing.
There are lots of good tutorials on the internet: this website appears to be based on Nancy Marchant's book, which is how I learned brioche. (If you look at Marchant's book on Amazon using Look Inside, you can see the first chapter in which she explains not only basic brioche, but also fisherman's rib, so you can compare them.)