Need to send a form data to email and also give a thank you message

I want to design a form that would send me the data on email, I know this might be very basic for some of you but I would still like to know that how could I transfer form data of people and get it on email once they click on submit button, and I also would to give them a Thank message

If anyone has a reference to a video that might help me in solving or any any ideas would be appreciated, I know that I will have to use AJAX and PHP but how I don't know how to execute it