Glad you got out of this unscathed. Your first goal, in these circumstances, should be to avoid a confrontation. If someone is following, often the best tactic is to find a police station and let him follow you there.
"It is long been a principle of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully." -- Jeff Cooper