You need to have some trust on the forum before anyone deals with you as nobody is going to buy courses from you as a newbie without any reputation on the forum and you can avail different free courses for poker and with practice you can have the skill for it with time but maybe you found someone who will be willing to have course from you.
I understand that. I am willing to give samples and pretty good deals to the first customers. No pb.
First of all you should clarify to us that your courses are not some Udemy courses which you can download for free in not that much orthodox ways,but even if you have bought at Udemy which I saw it has thousand of poker courses in many categories for just 12.99 or less if you are a new member registering there.
If that is not the case and your courses are 100% authentic from you and you are not violating any copyright means then you should probably upload a small video somewhere as a free sample for us all to see and evaluate if it is worth it or not.There are a lot of free video upload services with Youtube being the most well known one.
Once you have clarified all of this I am sure the members here will start talking to you in a different manner,but unless you don't do this it is only natural for us to at least have doubts about such service.