Yes oh!!! The advisement of job opportunities are too much on the street. Everywhere both in social media and banners, but everyone has their different experience on it. The best way to avoid them is to ignore them whenever you see or hear about them. so their methods will also reduce. But they would plan for another way to lure the ignorant people to participate and siphon fund from them.
We're seeing the new type of it through the social media these days. Well, those that are offering on the streets have leveled up and they're doing these like 1-day classes on the internet now through webinars as they say.
But on your case, it's entirely different and you've managed to get an information likely for $3. Although most probably that you've learned there can be learned for free but you have the idea now in crypto.
Are those guys that you've met still do what they've done to you?