if you want to buy ETH must use escrow for it or you can explain the OP above, if you do not use the escrow many people will be wondering about it for you.
I don't know how to use it. Plz tell me more
An escrow is a middle man. there are some very trusted users around the forum that would act as middle man for these type of transactions. usually for a fee. YOu can find a few of these trusted users offering there services in service section.