You can send some text.

And.....

Now would be a good time to play with the SERIN2/SEROUT2 modifiers.
Data can be formatted several ways, HEX, BIN, DEC, ASC||, STRings...

Might be something sorta fun... Send a number to the PIC® say in DECimal format and have the PIC® return the number in other formats. Play with every combination you can think of. This should give you an understanding how different number systems work with this system.

Could even send a couple of numbers and have an operation done on them and the results sent back to the PC.