Sfm.................?

i am taking classes from aaditya jain in delhi face to face....just tell me he is saying that i will open demat a/c on behalf f you..nd buying and selling transaction will be done by you,any profit or loss will be borne by you...he says its for practical knowledge...but i hv talked to my 2 friends who took classes from him...they say they suffered 50000 and 40000 loss in that and there are chances of temptation too....what should i do now?