their/there/they're, your/you're, and the oxford comma

helloo pls learn how to use these, it kinda pains me to see people using them the wrong way 

their shows ownership - "That notebook is theirs."
they're is like a combination of "they are" basically - "They're so cool! (They are so cool!)"
there just refers to place - "I was over here, she was over there."

your is like their, its possessive - "Your pencil fell."
you're is like they're, its a contraction of "you are" - "You're really pretty."

yeah i hope those were understandable explanations, its really easy to get imo!! oh also heres how to use the oxford comma correctly too

if you're listing 3 or more things please make sure to put a comma before the and. - "thing 1, thing 2, and thing 3." if you don't it would kinda look like thing 2 and thing 3 are together idk how to explain it like - "thing 1, thing 2 and thing 3" it basically just prevents misunderstandings and stuff

this is basic english literacy please learn how to use them, thank you!!!