i am a guy who just wants to start code... so if there is any tips you can provide.. please comment bellow!

Well this is a vague question. Assumeing no experience I guess a place to start with pico-8 is draw a couple of sprites.

Try to move the sprites up and down the screen with keypresses.

After that maybe animate them. Add sound effects when something happens etc.

I think a lot of people start here. https://www.youtube.com/watch?v=J1wvvbVQ5zo