OK, so i'm trying to do some password recovery with John the Ripper and wanted some advice getting things going. i have some ideas about where to start with the password and wanted to try and get some rules to work, or after some reading realize i probably need to come up with an external mode. but i have no idea about how to do that. I've tried reading through some of the documents but they make no sense to me.

anyway. so i know the password is "[a capital letter][some lowercase letters]123" and was looking for some ideas about the best way to go about finding the actual password.
any advice would be much appreciated.