Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
With this build you will be a greater tank and a nice dps.
Try to go alone because Garen is strong against the most part of the champions.
Ghost and Exhaust will help you to catch your enemies and kill them.
If there is to much magic buy Force of Nature first and Sunfire Cape latter.
Try to spin very times to the enemies and you will be UNSTOPPABLE :)