If I Tell You, I'd Have to Shoot You
Do you know how to use Non-disclosure Agreements to protect your Intellectual Property, here are suggestions from your About.com Guide to Management

Avoiding Patent, Copyright & Trademark Problems Best of the Net
Professor Field's excellent article features a concise definition plus tips on avoiding infringement problems.

Copyright Questions and Answers
Joe Burns, Ph.D. provides a good summary of copyright law as it pertains to the Internet.

Frequently Asked Questions about intellectual property law
Oppedahl & Larson provides this hyperlinked list of common questions and their answers concerning patents, inventions, and trademarks.

Dictionary of the Law
From Find Law, a dictionary of legal terms, a searchable glossary of more than 6,000 legal definitions.