which course do you recommend? I see u have the vault ... pro ..and core...

Don't let the fact that preflop hand equities run so close fool you, once the flop comes you have a very good idea of the strength of your hand. There is just so much more information available to a player in PLO8 compared to HE. You know 7,8,9 cards that are in play at the flop, turn, river compared to just 5,6,7 in HE, extra info on blockers for example. Crazy random bluffs are rare in PLO8 and are unlikely to just get there when they are played, not so in HE. Don't know if you play this beautiful game but I think every poker player should, particularly if you are more math than 'feel' ;)

That’s not true even noobs know what hands to play preflop in holdem whereas nobody knows the right hands to play preflop in o8. Postflop it is way more skillful and less variance than holdem. You don’t know what you’re talking about.