Hi Tori! Welcome!
I'm glad you're enjoying the site!
To do cables, you only need to "twist" the cables like I show in that row, once every so often. With those particular cables, I think it was every 6th row. So, you just do plain knitting the knit stitches, and purling the purl stitches, for 5 rows, and on the 6th row, you twist the cables.
The knitting needles I used are my Boye Needlemaster Interchangeable needles. They are circular needles, where the needles are short and unscrew from the cables, so you can have circular needles of different cable lengths. The new ones come with 13 different needle sizes.
The short wooden cable needle I used I bought from my LYS. I don't remember their name, but you can make similar ones from plain wooden dowels, as shown in the video on making your own needles.
(site creator. Yup, that's me! )