Gosh…I could write a lot on this subject lol.
I’m going to assume that you’re talking about ‘texas holdum’ here, as it’s been the most popular for quite a while. That being said, poker is poker, and the way you play doesn’t change much from game to game.
https://www.amazon.com/Doyle-Brunsons-Super-System-Brunson/dp/1580420818 For starters, pretty much the bible. There are quite a few books out there, by quite a few great poker players. For me, Doyle Brunson is the king. I’ve read pretty much every poker book there is, and found this to be the most ‘real world’ useful.
As far as odds go, figuring out the odds given what’s been played, is actually fairly easy for someone that has any kind of affinity for math. Poker is rarely about the cards in your hand, and almost always about what cards are on the table, your read of the other person, and your ability to know when to bet. It also has a lot to do with position, there are good and bad positions to be in, when you are trying to force a bet or steal a pot. All of that stuff can be learned by playing, but also just by watching poker tournaments and listening to the commentary.
Long story short, poker is a game about betting, not a game about cards. Getting to know the odds on cards, probably won’t take him long, getting to read people, know their tells, and know when to push, is what takes time to develop. It’s impossible to win at poker, by only playing “winning hands”, you have to win some pots with bluffs. Don’t get me wrong, having math affinity is a huge plus for a poker player, knowing that you are 40/60 going into a bet, is crucial to deciding when and what to risk. His math will certainly serve him well, there is just a lot more to the game.
I’m pretty old, I’ve played a lot of poker, as I said, I could go on for quite a while about this but will spare you the manifesto lol. If you have any questions, feel free to shoot me a message, but reading that book, and watching a lot of poker, will get him well on the way to fleecing his buddies. The one thing he needs to watch out for…it’s much more difficult to win money off of bad players, than it is good players. Bad players will stay in hands they shouldn’t, because they are too dumb to know what’s being represented on the table. This will lead to people making hands they have low odds for ect. Something to be mindful of as he starts out probably playing people that suck.
Beat bad players with cards, beat good players with aggression, is a pretty good rule of thumb for any poker game.