I heard words like cannon and shipping, but what do they mean?? I searched up the definition and I didn't quite understand. Could I be given an example and stuff?
It's "canon" (one "n" in the middle, not two), and it refers to what is accepted as "official" for a story or setting. (Cribbed from ecclesiastical jargon.) Debating what is and isn't canon is a common pastime for fans.
And "shipping" derives from the word "relationship". For fans, it means speculating on the possibilities of various characters having various types of relationships, usually romantic, often erotic. "I ship" therefore means the speaker likes or imagines a relationship between the two (or more) characters mentioned.