Playing poker is quite simple if you are not pretending to smth elevated, but to become professional, not only skills matter but also personal characteristics, and this is very hard to teach
I think everything is based on your techniques that you use when you are playing to receive your opponents so they will not be able to understand your present mood. Professional poker players have different strategies they can put in place to confuse there opponents not to be able to read there mind. Experience also matters a lot so we have to know that experience is the best teacher.
^ That is bluffing.
Bluffing sometimes made your lucky day but not all the time, if you have opponents that have the same technique used, it will probably not work because both of you pretending about the emotion. But I don't know how it will work in online poker games if your opponent is online, there is no bluffing and your luck depend on the cards that you get. I don't know how effective poker game online courses are right while it is free over the internet, I even watch a different tutorial on Youtube and try my skills using an app that is playing poker for free.
Not only bluffing. Your opponent can analyze your bets and try to understand your hand. And can change strategy to confuse him. And in online poker we have some other rules - we don`t see the opponent, we can`t read his emotions. But i agree that there free courses and it`s enough for the most players.
I think that one of the strategies of poker is to determine how people play, usually a person will always have a model of plays or a pattern that they always follow, and that can be quickly determined by at least one machine in a casino, but for people who play actively at a game table requires a little more time, when it comes to playing physically it is easier because of their gestures, but when it is in a digital game way it is more difficult, I think the most easy to see is when bets are made and some check and some don't, I think that's a way that you can take into account to determine if you can get a person's style of play, but of course it's not entirely reliable .
I don't know how else OP can make them believe in their good faith, it's difficult, I know that marketing within the forum is something that can be very profitable but you have to know how to do it, the people in the forum are not stupid at all.
If his intention are really clear on selling those poker courses, he should post all the details about it. Based on his previous post, he will only entertain members that are interested via private message which I think seems fishy. It will even help him lessen some time catering to each PMs if he post the details. I've also been wanting to learn poker recently and his post got my attention but how he acts is not appropriate if he really is a legit seller.
Without a doubt, this is something not to trust, I really would not buy a course like this, it is very likely that they would rather wait to see who can buy it and give a review, but throughout the thread we have not seen anything, and for a reason, I'm not saying that OP wants to cheat, but it's better to wait until everything is clarified, but in my personal opinion and seeing that many people are somewhat new to this aspect, they shouldn't rush, besides, poker is not so by reading certain indications you will be invincible, that takes a long time, you need experience when playing and a series of things that are not said in courses or similar.