I teach adults to knit the same way I teach kids to knit.
(cuz that's what I do)...then...
1) Cast on
2) Knit stitch
3) Bind off
4) how to pick up a dropped stitch using a crochet hook
5) how to recognize a twisted stitch, and a dropped stitch
Using worsted, or bulky yarn, and US9-11 needles, preferably wood.
Let the knitter master a garter stitch scarf, or dishcloth...then move on to purls, and other fancy stitches. They need that hand memory mojo rolling before they move on.