betting is not good a choice .you can invest your bitcoin in a good project, we have many of them.by investing them wisely not on betting or schemes.betting is game of luck,it is not good to start with as newbie
Yes and there is a full possibility that he will loose all his money at once and left with nothing in his hands and loosing higher amount of money in gambling can also lead for him to have an negative impression about bitcons and in future may be he will never use bitcoins.