Did you get some kind of program listing/assembly code to go along with the circuit? Unlike dedicated hardware circuits, the PIC is a general-purpose microcontroller that needs program code to tell it what to do. The circuit shown just provides a "framework" for a counting circuit, you still need to burn an appropriate counting program into the PICs' flash memory.
Working with micro's involves a certain amount of overhead. If you're not that comfortable with electronics yet, you may want to look for a counting circuit that uses discrete MSI hardware ICs. The circuit would require more chips, but no programming is involved.