National Main Street maintains resources for members and the public.
Organizational development includes technical assistance offered through industry experts. Examples include strategic planning, strengths and weaknesses assessment, economic development strategies, leadership training, how to implement a volunteer program, fundraising ideas, and even major topics, like comprehensive planning. Currently, Florida Main Street maintains a list of technical resource aids for workshops or individual help, and those aids may be available at a cost or free for the asking...so ask! This list of experts is dynamic and fluid. Feel free to share vendors you've had experience with that could be available state wide.
A law firm that that serves nonprofit organizations and makes a ton of great information available online.