[Help] Sonnets are stressing me out!

Reddit I'm currently trying to write a sonnet for my University portfolio as I want to do Creative Writing and English Literature but I am genuinely finding it to be the toughest thing I've done in a very long time. Like seriously, it's driving me crazy!!! I'm 17 years old and can't even understand stressed and unstressed syllables. Is this something that I pick up in University or is it generally considered "easy" and it's merely just me being slow? Do I even need to understand stressed and unstressed syllables? I think I'd like to understand it. PLEASE HELP ME!