If you're playing Law Dogs against Ramiro, consider starting Wendy Cheng as she can kick him out of the town square. The action card Pistol Whip does the same job. As Ramiro needs to be paid every time he joins a posse, you could try waiting until your opponent's ghost rock is low before starting a fight. Sending a dude in solo to fight Ramiro then escaping with Make the Smart Choice, followed up by sending in a Bounty Hunter to force a call out would get rid of two ghost rock, which might even be enough to force a discard.
A Shotgun on a two bullet dude will make short work of Ramiro, and the action Sun in Yer Eyes will make him into a one-draw, which is far less threatening. Both Law Dogs and The Sloane Gang can make good use of these tricks.
Morgan Cattle Company could take advantage of horses to draw Ramiro out of position. The Fourth Ring can do the same with Shadow Walks until they get the Soul Blast hex, and then Ramiro will have to be careful getting into a fight with your hucksters. Both of these approaches will help you get used to the movement and positioning aspect of the game (commonly referred to as the chess game).