Hi Lorri,
I would suggest having Jarvis tidied up initially by either (if possible) his breeder, or a groomer in your area that can be recommended to you.
At 5 1/2 months he shouldn't have too much done as I shouldn't think his coat is ready to give yet, but he can still have feet, head & ears done so that he gets used to the routine
Doing him yourself isn't too ambitious, but you will need to find someone to show you the basics. Good luck, and don't forget we're here to help with what might seem like silly questions