Is there a better way to do this than learning?
For instance, is there a way to directly copy
clean IR codes directly into ProntoEdit if they
are not available on the IR data base?
Look at the section in the FAQ on discrete codes. This tells you how you can cut and paste the hex form of IR codes.
Also, now that I have learned the codes for two custom
resolutions, how do I go about incorporating them
in Macros?
You should never put IR codes directly into a macro. You should always use aliases. i.e. set up two buttons each having the IR Code for your custom resolutions. Then your macro simply uses aliases to point at the codes in the separate buttons.