Associations may be a good avenue to explore. These organizations will address many of the thoughts, questions and concerns you'll inevitably have as well as many you haven't anticipated yet. See the source box for some relevant links.
Research, research, research – this cannot be stressed enough. Read as much as you can about the industry. Here are some book titles that are relevant:
* Start Your Own Freight Brokerage Business by Entrepreneur Press
* A Practical Guide to Transportation and Logistics by Michael B. Stroh
I also posted links to some free articles in the source box.
Hope that helps! I wish you much success & happiness in all your ventures.......!