What “Wi” means
Wi is the pronoun for "we", "us" and "our". It never changes form: "wi live a Kingston" (we), "gi wi di key dem" (us), "wi granny" (our). Separately, "wi" is also a future marker meaning "will", which sounds the same.
Examples
Wi live a Kingston
We live in Kingston
Gi wi di key dem
Give us the keys
Wi wi see yuh a church
We will see you at church
How to use it
Everyday. Word order shows whether it's subject or object; possession is "wi" before a noun or "fi wi" (ours).
Where usage varies
Future "wi" (from "will") is distinct from the pronoun: "Mi wi deh deh" means "I will be there".