Sending an email on form submission

Hi everyone!

I created where students can choose which course they want to study and after filling a form I would usually receive an email notification. I did that by following this tutorial:

However, the point of this tutorial is that after filling a form, both me and the student that signed up will get email notification. But I don’t want that, so is there a way to leave some code out so that only I receive confirmation?

Thanks in advance,
Nemanja

Also, there is another issue. After clicking on the submit button, default email app or default web browser opens and I don’t know why. The page I’m talking about is: