I was/am a boy scout and have received that basic first aid training. I have also taken CPR classes from red cross instructors. It has however been a long time since I was a boy scout or last took a CPR class and should review that material as a first step. I will find my boy scout handbook and review that.
Generally, I would like to improve my skills a step or two beyond the boy scout level. Although I would like to improve all of my first aid skills, I would most like to improve my ability to deal with traumas and bleeding. Since I hunt I worry about falls, gunshot wounds, cuts, impalements, broken bones, sprained ankles, and the like. But, since I also drive cross-country, I would like to learn how to better treat injuries of the type received in car accidents. Also, since I have a wife and and infant child (and am hoping to have other children) I would like to learn how to perform basic first aid on a child as well as how to perform an emergency delivery.
I hope this helps explain more clearly what I am looking to learn.