As a poker player, I am offering help on how to get started and start crushing the micros for free. If you are interested in more in-depth coaching, we can also work something out.
For more information, please send me a PM.
Maybe you can make an e-book about the technique or method you have. So people can trust you a little. As for practice, you need to build people's trust in you, at least you can start by building your account on this forum, because in my opinion it can be a guarantee although not really a full guarantee.
Perhaps giving it free to people on how to play poker well and correctly will interest them and periodically provide other lessons. If any of them benefit from the e-book, I'm sure they will try to get more interesting lessons out of it so that if he sells further lessons on poker, it can entice people to buy it. I guess it will have to do with marketing strategy if he wants to sell poker lessons, but he really needs to know how to sell them. Yes, he needed to earn people's trust before they would buy anything else from him.