Hey RIO community!

As mentioned in the thread title, I'm a MTT player looking to start learning & playing seriously PLO $$ on side

I have basically Zero knowledge, barely know the rules.

I saw. RIO has quite some PLO material out there but did not know which want to start with.
Which RIO series would you recommend me watching first?

And which stakes would you start playing as total beginner? 6-max or full ring? which poker room?

Thanks a lot for your help, very much appreciated!