I've been a Certified marketing and technical coach for SiteSell's Site Build It! product. This very popular self-help package teaches people how to build online niche businesses through keyword market research, well-planned Web content development, Search Engine Optimization, and online promotion including newsletters, RSS, e-courses, autoresponders, online sales and e-goods, affiliates, blogging, etc.
www.Rensch.com ... what you're looking at now ... has been online since 1996.
Among my experience with marketing legal services -- I've consulted in the development of a newsletter aimed at solo lawyers (including naming it), and wrote the website of a small firm specializing in real estate (www.toepferlaw.com).