Roaming as a support champion and manipulating minion waves
As of late I've been trying to learn more strategic stuff about the game, and two things that seem important (but I am not very good at) are knowing when/how/if I should roam as a support (advice for roaming in general would also be super) and how to manipulate minions (as any role) in such a way that they will push without anyone (from either side) being in the lane. I don't play ranked or try that competitively, but it seems neat stuff to learn.
Any hints, tips or tricks?