First time at a Jays game. Any advice?

Hi Jays fans! I'm going to my first (ever!) baseball game soon and I'm pretty excited. Can someone give me a cheat sheet to study before I go?

1. Any chants I need to memorize?

2. Any long-standing rivalries I need to know about?

3. Who are your favorite players (and why)?

4. Any cool tid-bits that might make the game even more fun? :-)

Thanks Redditors!!! GO JAYS!!!

EDIT: Had an awesome time at the game tonight! Thanks for all your advice, everyone!