Healthy boundaries are essential to healthy ministry. My own book, Professional Sexual Ethics provides case studies and discussions for group study. If you’ve seen the movie Honk for Jesus, you might be interested in The Rev. Dr. Doug Powe’s assessment of the Eddie Long case! (chapter 12)
The Faith Trust Institute now offers many of their training manuals online free, including the workbook Healthy Boundaries 201.
Resources on the ethics of gifts include a discussion of IRS guidelines, discussion of church and tax law, a ChurchFinance365 resource on tax free gift to the pastor, and an interview I gave for LNP.
Also of interest is a curriculum for congregational discernment published by the Kentucky Annual Conference of the UMC.