Hi! Congrats on your new baby and Welcome to YT!
For training I either use pieces of her kibble or Bil-Jac small dog training treats that I break into smaller pieces (they are soft treats). I also just recently started using Natural Balance treat - it looks like a wrapped sausage- you can purchase them at Petco.
I would ask your Vet to rec a good flea preventative. There are topical and oral medications. Don't use a spray on your puppy.
I've never noticed any of my female dogs peeing and getting it on their feet, so I have no advice for you there.
And finally trimming her so that she's cleaner after pottying is definately something you can do at home as long as you feel comfortable doing it
