Does having proficiency in a shield as a shield cover using the shield for bashing or throwing purposes? Of would I need to have martial/exotic weapon usage as well?
From faq for the core rule book:
"Shield Bash: If I am proficient with wearing shields, can I make a shield bash without a nonproficiency penalty?
Armor proficiencies and weapon proficiencies are different things.
Table 6–4: Weapon (page 142) lists light shields, heavy shields, and spiked shields as martial weapons. The shield bash attacks entries (page 152) say that using a shield in this way is a "martial bludgeoning weapon."
Regardless of whether or not you are proficient in wearing a shield for defense, attacking with a shield is using a martial weapon and you take appropriate penalties if you are not proficient in martial weapons (for example, if you are a cleric, you take a –4 nonproficiency penalty when making shield bash attacks because you are not proficient in martial weapons)."
That's what I needed thanks