I have often been on BPO recommending Pat Miller as a trainer and author on effective training methods. She is world renowned and the training editor/writer in Whole Dog Journal and BARK magazine - the two best dog periodicals on the market.
There are so many training needs here, especially with new puppies and rescued dogs, that I want to share her discussion group with you all. Pat answers behavior questions directly but there are also scores of other trainers, many of whom apprenticed under her, on this site as well, so there is a lot of experienced advice.
You can find her discussion group on Yahoo Groups and called Peaceable Paws or you can just send an e-mail to:
peaceablepaws-subscribe@yahoogroups.com to join the group.
I highly recommend it.