Arizona

• Trade Names and Trademarks Questions & Answers
• Trade Names Standards and Guidelines
• Trade Names, Trademarks and Service Marks (Handbook)
  
  
• Arizona Secretary of State Office
  Contact Information

Federal (U.S.)

• Basic Facts About Trademarks
• Certification Marks
• Collective Marks
• Geographical Indications
• Internet Domain Names as a Trademark
• Keeping a Trademark Registration
• Service Marks
• Trademark FAQ
• What Are Patents, Trademarks, Service Marks and Copyright?
• Where Do I Start?
  
  
• US Patent and Trademark Office
  Contact Information

International

• Emerging Issues in Intellectual Property
• FAQ About the Trademark Database
• Geopgraphical Indications
• Industrial Designs
• Internet Domain Names
• Looking Good: An Introduction to Industrial Designs for Small and Medium-sized Enterprises
• Making a Mark: An Introduction to Trademarks for Small and Medium-sized Enterprises
• Trademarks
• Trademark FAQ for filing under the Madrid System
• Trademark FAQ for small and medium enterprises
• What Is Intellectual Property?
• World Intellectual Property Organization (U.N.)
  Contact information
  From the WIPO website: "WIPO is not in a position to offer legal advice to individuals or businesses on specific questions." 

Miscellaneous

• Nolo Press:
  Nolo publishs self-help legal books that are written in "plain English" by legal professionals; Nolo also has an extensive website with many self-help features, including:
  
  • Conducting a Trademark Search FAQ
  • Enforcing Your Trademark Rights
  • Filing a Federal Trademark Application FAQ
  • How Trademarks Differ from Patents and Copyright
  • Naming Your Business
  • Qualifying for Trademark Protection FAQ
  • Types of Trademarks FAQ
    
    
• Other product identifiers (USPTO)
  "A name by any other name - may not be a trademark. Look up other kinds of identification and where to find out more" about them; includes such items as ATF, ATIN, CAS, NDC, NHRIC, UPC, VIN numbers, etc.