They deal daily with their members, and their volunteer leaders are likely to be the most successful and capable members in their line of business or profession. Often, the staff members will be happy to discuss their industry with potential new business operators. Professional associations often compile reams of data and background information on their industries. They commission major studies on their industry, conduct surveys of trends and practices, and publish regular periodicals. They can be fonts of wisdom on just about everything about the industry that can help you study the field.
Members also rely on their trade associations for a wide range of services and products.
That can include cooperative purchasing opportunities for goods used in the industry, health insurance, and other types of business services. Knowing what is available can help in your evaluation of different types of enterprises. It really is pretty easy. It contains listings on virtually every industry or professional association in the country. That almost certainly will turn up good leads for you.