So over the course of playing, I've randomly found out some things that don't seem to be documented, or I was just too dense to understand, and if you all have too, I thought we could share them here so we can all get better.
-We all know you can "pre-load" flips, since that's how you have to do them, but you can pre-load grinds/slides as well. A 5-0 for example, before you even ollie, press the left trigger, and when you land on the ledge or rail, you just have to hit the grind button and you'll automatically do a 5-0. This works for nose/tail slides and blunts, anything you have to lean into.