It was a good tip that you should also visit Telegram discussions and ask all the questions you have in mind. But as there are scammers, there are also professional scammers, who have it all written down very well and they are experts in answering every question you could ever have. For this reason, it is very important to also search their background and try to find out, what kind of history they have. If they say they have experience of some field, even then you should find out what kind of players they have been - successful or just some puppets.