You might be disappointed in regard to learning a ton quickly. It's a process.
I'm a noob too but as far as hands to play, look for hands with connectivity and nutiness. Ideally, they'll be doubled suited as well. Double suited means a lot and the backdoor equity from having double suited hands is a big plus. Draw for the nuts.
AAxx - don't limp. Jam the hell out of it pre. Ideally, you can get it all in pre, HU. Don't play bad high pairs, especially rainbow ones (KK72, for instance). Double paired hands are good and you'll flop a set almost 25% of the time. Sets are strong in PLO but not as strong as in NLHE and set over set isn't an uncommon scenario in PLO.
This is a great site.
https://plomastermind.com/
Subscribe to the plan with a PLO Trainer and the PLO Trainer web app should certainly help you a lot. A great course included in the subscription is the 10-week transformation.