Poker is not a hard game to understand,you can learn it by downloading some free poker games on the internet and learn the basics but gambling is different from free games,you are risking your money if you lose the game you also will lose money.So don't do gambling if you are here for money making.
I think that you need to visit a casino and should learn about pocker there. Although it is easy to download a pocker through internet but still I do not think that it I will be too much effective, I think that the most important is to play it in a casino with some expert and get tips from them.
he can visit the casino if playing gambling is allowed in his country but although it is prohibited, he can try to visit on casino website which he can try to play. I think it is to learn about poker because he needs to know the rule and the cards so he can start to play the poker game. maybe it is better for him to learn more about poker with reading the tutorial that available on many websites and learn from the video that available too on youtube site.