Learning....... a good place to start is the links off to the left side of the main web page
www.parkerguns,org All the links in the bottom half of the list (under "Collector Information) is where to start. The FAQ's have a lot of information that originated from discussions that took place here and are worth reading.
Then there is "The Parker Story"; it is the go to place we use for Parker knowledge. When you are ready for that level of detail of information, then get a set and dive in.