In this case it looks like the PIC is code protected (most sensible commercial devices would be protected) and as such you would be out of luck.

Also I notice you say you are a new beginner. Even if you did get access to the microcode, it would of limited use to you. You would only be able to reverse compile back into Assembler, and then you will have to understand what the program is attempting to achieve and be familiar with the hardware circuit to get any idea what is going on (since you will have none of the original program comments or notations as they are not saved in the PIC). This is a long, hard and very tedious process for an expert, never mind a beginner. Most probably it would be a lot easier to write new code from the beginning.