This is a cool concept to talk about, many people really seem to have no idea how easy somescams are to spot, yet, there's not much content out there about how to spot it. Kudos to you and good luck!

I recently shared my knowledge of bitcoin with an environmental leader in my village. incidentally his son is a friend of mine who is currently joining me in the crypto space, he is a graduate of informatics. Initially, my friend's parents were afraid because their child was involved in crypto (thought cryptocurrency was a scam with a ponzy scheme). By utilizing words such as bounty, free coins, and being able to make money without material loss, the parents slowly opened their minds and allowed their children to remain in the crypto room, even asking me to teach others (in my environment) about bitcoin technology. , also about the advantages and disadvantages of investing with bitcoin. bitcoin investment with capital from the bounty proceeds, it turns out to be a good start to introduce bitcoin for beginners here.

It's rare. That's great.
Most won't have the courage to do it.
Just use normal things to share which normal people do. (As they say it)

Being different is something great and only a few know that. Now you shared to them something new and different and I bet they are now browsing their way to google and there may be odds one of your classmates is signing up in this forum right now. 

I'm glad to see that this was received well and with little skepticism.

As from my experience when I try to tell people about it I get 2 kinds of people, people who look the other way and remain stubborn at their own ignorance and the other people who genuinely look interested and want to learn, some which even consider buying.

I'm always pleased when people are open to learning new concepts and embrace knowledge generally! Glad you had such a positive experience.

Nice job if you have shared what bitcoin is to your fellow classmates and even to your teacher. Being a student before, we're the ones that were taught about things and life. But in your case, you've just shared what bitcoin is to your teacher.

Not all teachers are like those who are open to know and ask about bitcoin. And anyone who's asking about it, you can give an answer as long as they want to know it what really it is.

Obviously many people don't want to listen,because of what scammer has done to some people that follow back door in crypto currency,it took me some months to make them to understand, and how they can benefit from bitcoin, if they follow the right procedure.

So basically you've thought them that most of crypto related activities and marketing strategies are often deceptive? lol. But you're right, some platform tends to have a ridiculous offer in which some successfully pulled things off yet some are tagged as scams with such deceptive advertising.

What else have you thought them? I hope you've only told them what is the basics of Bitcoin and blockchain, or crypto in general, and not this forum. Some people might be doubtful most likely on how to earn in here and that's an issue we keep dealing and dealing in the Beginners and Help board.

And I've also remembered that some on my collegiate friends had used crypto as their research if our country or the local university is aware with such technology or not. AFAIK, lecturing others is the best feeling especially if you would share an innovative knowledge like the crypto and Bitcoin per se (to also prevent them with the false ideology that crypto is a scam)

How old is your marketing teacher? It is very strange that he has not heard anything about bitcoin and cryptocurrencies before, while being (and even teaching others) in the field of marketing. At our Institute of Economics, all departments know exactly what cryptocurrencies are and most of them know how to use them, and some even trade.

Trueeee. It really feels good sharing some knowledge of yours to some people but it gets tiring as the time passes when they start to check their phones while you are talking them, it gets me frustrated every time but I can't blame them because of their personal interest.

It's not for me, they just always ask what's with bitcoin and other coins, what they commonly asks to me is if it is really profitable, how they can gain money from it, is there no money involve ( like wtf ), and so on. I'm studying in a technology school, there was a time that I attended a blockchain conference, I expected it to be technical enough for me to understand but it was just an introduction, it seems like even my professors are having hard time to understand what it really is, I think the age is a factor here somehow.

Though in case of freebitco, they are not a scam site and just to correct a lil bit about the advertisement from freebitco's site -
It says, win up to $200 in free bitcoins, so it is not the "Win $200 bitcoin per hour" as the OP presented. They have a lil bit of difference in meaning here. Anyway, we really see a lot of false advertisements everywhere, bonuses or rewards from casinos with certain requirements that they don't disclose outright. But to avoid these situations, trapped in a false advertisement, first make sure that you are visiting a legit website and not a potential phishing website. Because most legit websites will really give what is offered but of course it entails certain requirements to accomplished before getting such reward.