Edge Orientation (EO) is a pretty easy step. You can learn the single swap case and do everything with that. It’s better, though, to learn the easy opp/opp EO as well, so you can do any EO in at most 2 algs.
The first EO is a single swap. It switches DF and UB. The alg is (0,-1)/(-3,0)/(4,1)/(-4,-1)/(3,0)/
Get this alg down. Even now, I probably use this EO more than ANY other alg.
The other alg to learn is the opp/opp EO. It’s easy: (1,0)/(-1,-1)/
You can also do it the other way: (0,-1)/(1,1)/. Just do whichever feels more comfortable to you. I choose which to perform based on how my hands are positioned beforehand. Note that that alg does the same thing as M2 does on a 3×3, and so from here on out I’ll refer to it as M2. This will come in handy later when you’re learning EP.
Anyway, I’ll leave it up to you to figure out how to do the harder EOs with those two algs. Just remember that M2 is much faster than single swap, so use it instead if possible.
After you’ve got that down, head over to the page about Parity for the next step.