Shield types and the classes that can use themFollow

Hey all,
as a second character i've created a dwarven fighter, but i was surprised to find that two of the shield types are unusable (at lvl 7) I sort of assumed that the fighter archetype would be able to use any type of shield. The types of shields were kite, and the type just below that. Will i gain the ability to use these when i hit my subclass? I appreciate any assistance as i haven't been able to find much info about shields and their usage.