New to MTG

Hi guys, I’m new to MTG, I don’t even own a deck yet, I don’t know any rules, nothing. I have been collecting sports cards and trading cards for a long time. Ever since the Marvel Collection had come out this had interested me but I never have pulled the triggered, now the new TMNT cards have gotten my attention, how do I play the game and also, I know sometimes there are cards that are worth a lot when pulling, do I treat them like sports cards and put them in the card sleeve and toploader and still play with them or are they just for show? I want to learn everything about this game as much as I can before I pull the trigger and put my 100% into it, any help is appreciated, thank yall.