twoblink: it's not just about weaponless self defense - it's also about disciplining of the mind. Knowing how to use a weapon, whether its firearms, fists or feet and when to use them are two different things. A good instructor also trains your mind and is a spiritual instructor as well (not in a religious sense). Find a school you like and go for it.
Vigilantibus et non dormientibus jura subveniunt. Molon Labe!