4 day training real estate (netherlands)? help!

[Jim Scholten]

Hi, my name is Jim i am 20 years old and i have the chance to go to a 4 day training about real estate, the man who is speaking there i met 2 times already. I followed his workshop and spoke to him personally. He appears to be the only dutch guy to do seminars amd training about real estate. Here is my doubt: "my family doesnt trust the situation (they did not met the man) and they are all telling me i should not pay for his 4 day training... this could be a live changing training or it could be a disaster. (It costs 2500 eu) what to do?