To be honest if you really want to progress in game making you need to learn how to program (unless you want to stay with FPSC, then learn how to script and make better models etc...), and you have found the perfect place to start! This site has a language called dark basic pro, probably the simplest game making language around, and it really isnt hard once you get to know the basics.
With it, your limitations are only the boundaries of your imagination
Good luck in whatever you decide to do, and if you decide to learn how to program, you have a great community here to help you every step of the way!