One of my favorite resources for ideas and practical business-of-speaking tips is SpeakerNetNews.com.
There are years worth of archives and articles with a compendium of solutions to common–and not so common–problems faced by professional speakers and trainers. This includes virtually every aspect of the business from speech content to travel, from vendors to meeting planning, all from real life experiences from real professional speakers. Sign up for their regular ezine to get ideas delivered to your email in box.
Almost every issue contains an idea that I can use or that sparks another idea that improves my business acumen. Access to the site is free and there are hundreds of hours of audio created by successful professionals that you can purchase for download. I’ve never been disappointed by the quality of the content of any of the presentations that I’ve bought.
What useful speaker resources have you found?