"If I put a Restraining order on someone. okay, its done. that doesn't mean they wont attack me again. is it okay to carry a weapon? or something?"

You would need a permit to carry a weapon. If you put a restraining order on someone - either through the criminal court or the family court - that's it. If you find them following you or violating the order, call the police and report it. Violating an order of protection will result in their arrest. Good luck.