Hello, I want would like to know the difference bettween Say and Tell. Please help me. Thank you for any reply..

say is talking about something and tell is about someone or to someone

The meanings of these two verbs, tell and say, are similar. The main meaning of tell is to "say or write something to someone." The main meaning of say is to "use your voice to express something in words." However, there are some clear and easy rules to follow about when to use these two words, as shown below Tell is used only to instruct or inform, and when the receiver of the information is included as an object of the verb. Do not use for quotes.