It is not possible to protect ideas but rather the representation of that idea.
NOLO is a great, free informational site. Also, be sure to read what the USPTO (United States Patent & Trademark Office) has to say about patents.
Research, research, research – this cannot be stressed enough. Read as much as you can. Here are some book titles that are relevant:
* Patent It Yourself (11th Edition) by David Pressman
* Patents and How to Get One : A Practical Handbook by U.S. Department of Commerce
* How To Make Patent Drawings Yourself: A Patent It Yourself Companion by Jack Lo
* The Inventor's Notebook: A Patent It Yourself Companion by Fred E. Grissom
There are plenty of free informational resources out there. Check the source box for links to articles.
Hope that helps! I wish you much success & happiness in all your ventures!