Uhh I need a LOT of help

I've been busy creating this custom lang for a while, and recently I finished like its basics. So now I wanna write a whole ahh interpreter from scratch for translating my syntax that I write in my IDE into p5js. But I have no, like 0 experience w/ p5js, and actually I haven't used any other lang apart from js (html and css too) and basic py. Do any of yall have smthn to share? I'm open to suggestions