Before buying or selling, make sure you know the max you can sell or buy per day per person in your place of residence, then never suggest you would ever buy for illegal purposes and never sell to someone  that says or suggests in any way that it will be used for purposes that are illegal. Also, never ask for the purpose of the funds being bought and never  tell your intent of the funds being  sold. Basic rules of thumb  that you  should always be aware of.