I live in the Tri-Cities, so can't be of much help to you, but you have many very good breeders in your area, plus a very good Boxer Club. I would suggest you start by joining the Pacific Northwest Boxer Club and continue with the handling classes.
As for the ear postings, do not feel guilty about having the ears cropped. It sounds like you are more frustrated with the taping. Call your breeder and ask them for a recomendation of someone close to you that can help. Most people are very willing to help a newbie.

You should expect to pay for supplies and maybe for their time, but it won't be much. I would stay away from your vet, since most vets do not know how to tape ears. Tell whoever helps you with the taping about her reaction to the last taping. I am not sure why the pup would have actually reacted so strongly to the last taping. I personally don't use posts down the ear canal, so my pups don't react that badly?? But, I know many breeders that do and have no problems.
Here is the website for the Pacific Northwest Boxer Club.
http://pnwbc.tripod.com/about.html