In my attempt to get better at last hitting, I have found my main difficulty is that when using ranged characters, they'll attack the minions if they're within range even without direction.
I want to stand within range of the minions so that I can attack them quickly when they get low, but I don't want to get caught in the middle of attacking the wrong minion and I don't want to push too hard with lots of extra early damage.
I've tried right clicking a bunch to walk around in a tight circle, but that gets tedious and my fingers get tired very quickly doing that.
How can I prevent my hero from attacking enemy minions until I direct him to?