When you are in combat you can always tap the 'auto' symbol at the top of the screen to let the AI take over. Doing this also helps speed battles up but can be unreliable when you are in contests where there's a lot at stake.
Precise Movements
Touch control is enabled by default but you can make precise movements easier by switching to a virtual pad and button configuration.
Recover
Whenever you are in towns visit the local Inn to regain health, heal fallen comrades and replenish your items.