Should there be anything wrong with an entry, please, let me know. I will be glad to correct it.
Note: an entry can appear in several categories.

Organizations and Offices

• Australian Office for IP protection.
• Brazilian Patent Office.
• Canadian Intellectual Property Office (CIPO).
• Chinese Patent Office (SIPO). English version.
• Czech Patent Office. For english version, click the selection in bottom-left corner.
• Danish Patent Office.
• European Patent Office. Manages INPADOC.
• French Office for IP protection.
• German Patent Office.
• Indian Patent Office.
• Intellectual Property Office of New Zealand.
• Italian Patent and Trademarks Office. UIBM - Ufficio Italiano Brevetti e Marchi.
• Japan Patent Office.
• Spanish Office for IP protection.
• Swedish Patent Office.
• UK Patent Office.
• US Copyright Office.
• US Patents Office.
• US Patent Office patents & trademarks news.
• Various Organizations:
• DOI - Digital Object Identifier system managed by the International DOI Foundation (IDF).
• mEDRA. European registration agency of DOI (costs: 3-5 euros/doi).
• EFF Electronic Frontier Foundation.
  They are dedicated to defending freedom on the Net, busting false patents, etc ...
  See their Patent Busting Project, Blogger's Rights page and many more.
• Global IP Center, an affiliate of the US Chamber of Commerce.
• Invent Now. National Inventors Hall of Fame.
• ISBN International Standard Book Number. They assign the numbers.
• JAICI. Japan Association for International Chemical Information. The principle Italian copyright protection agency.
• PIUG. Patent Information Users Group (international society for patent information).
• SIAE. Società Italiana di Autori ed Editori. The principle Italian copyright protection agency.
• WIPO, World Intellectual Property Organization.
  In particular, see their copyright pages

Journals, e-Zines and Blogs

• Snippets, an on-line IP protection Journal backed by MBHB.
• Blogs
• The British Library patents blog.
• Library Law blog.
• Patent Docs, a Biotech & Pharma Patent Law & News Blog of Donald Zuhn et al.
• Patently-O, a Patent Law Blog of Dennis Crouch. Affiliation: MBHB.

Patent searches and related services

• Canadian Patents Database.
• INPADOC, INternational PAtent DOcumentation Center of the EPO.
• Fildata. Italiano. Vedi Servizi Gratuiti - Ricerca FILDATA.
• EspaceNet. Free, world-wide searches. Tip: search keywords in Abstracts.
• Free Patents Online - All the Inventions of Mankind.
  You have to register, but it is free and very good.
• German patents searches.
• Indian NIC, National Informatics Center.
• Patent Storm. US-centered; very good.
• Science IP service of CAS (Chemical Abstract Services) of the ACS.
• STN, Science & Technology International.
• US Patent Office patents searches.

IP definitions and legal aspects.

• Legal Database. Very good!
• Legal Information Institute ac Cornell University Law School. All kinds of laws - not just IP
• NOLO - law for all. Excellent dictionary and more.
• IP Menu. A huge and well organized directory.
• Justia - a huge law dictionary, wiki, and more.

Copyright issues

• Chilling Effects Clearinghouse. All about copyright.
• Chilling Effects FAQ's. Very informative.
• Copyright & Fair Use at Stanford University Libraries.
• Copyright Term and the Public Domain in the United States . An in-depth overview.
• DMCA (Digital Millennium Copyright Act) on Wikipeadia.
• Library Law Blog.
• US Copyright Office. An e-mail News daily. Registration required.
• US Copyright Office FAQs. A great source of info.
• World Copyright Law Report. An e-mail News daily. Registration required.
• Related matters:
• DOI - Digital Object Identifier system managed by the International DOI Foundation (IDF).
• ISBN International Standard Book Number. They assign the numbers.
• Italian ISBN. Qui e' possibile scaricare un buon manuale (PDF).
• mEDRA. European registration agency of DOI (costs: 3-5 euros/doi).

Trademark issues

• OAMI. European Office for Harmonization of Internal Market (trademarks, designs, models).
• INTA. International Trademark Association.
• Marcaria. International trademark protection services.
• Trademark site of Georg Pintz & Partners. Affordable.
• US Patent Office trademarks searches.
• World Trademark Law Report. An e-mail News daily. Registration required.

Alternative approaches to IP protection

• Alternatives to Intellectual Property, an article by Bennett at al.
• AEShareNet, an Australian licensing system
  (known also under the heading Free for Education).
• Budapest Open Access Initiative (BOAI). Editors and scientists: Join this movement!
• Creative Commons. A copyright protection service licensing and promoting open-content.
• Free to Read initiative of the American Physical Society.
• Free Software Foundation movement. Very interesting.
• GNU Project promotes free distribution and circulation of software:
  = GNU General Public License.
  = GNU Lesser General Public License.
  = GNU Copyleft Free Documentation License (in particular Free Documentation License).
  = GNU licenses, FAQs, etc.
• Open Access overview by Peter Sauber.
• Open Source software.
• Software Freedom Conservancy,
  an organization composed of Free and Open Source Software (FOSS) projects.
• The Cost of Knowledge, an Elsevier boycott you can join (see its poster).

Self-publishing possibilities and how-to do it

Self-publishing is coming of age and even becoming the publishing mainstream, perhaps. It used to be something like "ok, you wrote this booklet of poems and want to publish them, but we (the publisher) doubt it can fly on the market, so if you pay the expenses+ for 100 copies, we will consider it, else it was nice to meet you". This has changed completely thanks to new technologies. There is now Internet, e-books, all kinds of contents-hungry "tablets", print-on-demand, etc, and variuos kinds of businesses are springing up around them, opening new opportunities to would be authors and artists as well. The whole area is in constant and febrile evolution, so you better dedicate it three days of study before signing a contract with one of the Companies.

• Amazon self-publishing options (see bottom of each page) now leads to Create Space.
• Author House.
• Aventine Press.
• Book Locker.
• Create Space, a rather new Amazon spin-off.
• Dog Ear Publishing.
• Infinity Publishing.
• Instant Publisher.
• iUniverse, one of the majors of self-publishing.
• Lulu, a well established initiative.
  See bottom of their home page for international and media choices.
• Self Publishing.
• Writers Digest.
• Xlibris.
• Xulon Press is Cristian-oriented
• Articles and other resources:
• About the self publishing concept on Wikipedia.
• About self publishing companies by Victory Crane (good, but company lists are obsolete).
• Muslim Writers Publishing resources website.
• The Independent Publishing Magazine Mick Rooney's blog.
• On comparing self-publishing Companies.
• Publish on Amazon Kindle with Kindle Direct Publishing,
  Kindle book on Kindle publishing, by Amazon, costing 0.00. Download.
  For other zero-cost Kindle-writing manuals, look here and here and here and here, etc.
• Victory Crane's website (authoring services).
• In Italy / Italiano:
• Articoli sul self-publishing su un sito Italiano.
• Lulu, una iniziativa Italiana.

Companies offering patent and IP services

• Clarke & Modet. Largest IP consulting firm in Spain, Portugal and South America.
• Delphion. Patent searches and investment consultiong.
• Extra Byte offers technical expertise in patents evaluation and legal litigation in cases
  involving physics, especially NMR (Nuclear Magnetic Resonance) and MRI (MR Imaging).
• Fildata. Ricerche e documentazione brevetti in Italia e all'estero.
• Gallagher & Dawsey for small and medium-size Companies. Cincinnati, Columbus, Dayton, Ohio.
• Georg Pintz & Partners in Hungary.
• International IP Protection in the US. They publish their prices!
• Kevin Kennedy & Associates. Expert technical consulting, including legal services.
• MBHB, McDonnell Boehnen Hulbert & Berghoff. Pragmatic business solutions.
• Oppedahl Patent Law Firm. Info+. They are willing to give before they get. Thumbs up.
• Questel Orbit. Intellectual Property Group.
• Studio Torta in Italia. Torino, Milano, Bologna, Treviso, Rimini, Roma.
• Dialog online training and resources.

Resources, manuals, instructions, advice, ...

• 10 Big Myths about copyright explained by Brad Templeton. Web-related copyright issues.
• Basic Patent Search Techniques at CAS (Chemical Abstracts Services).
• Copyright basics for Web authors and users. Useful links.
• DOI - Digital Object Identifier overviews and manuals.
  If you are new to DOI, start with the overview by N.Paskin (PDF, 83 kB) and the links therein.
• General information about patents at Oppendahl.
• Independent Inventor's Resources from US Patents Office.
• NOLO - law for all. Excellent dictionary and more.
• NPC Patents, Trademarks & Copyrights, a well put-together IP law guide.
• IP Menu. A huge and well organized directory.
• Justia - a huge law dictionary, wiki, and more.
• MIT Open CourseWare pages. Search fo Intellectual Property.
• Snippets, an on-line IP protection Journal backed by MBHB.
• StopFakes, a US Government website with a tutorial and lots of useful info.
• Uni Berkeley Intellectual Property links.
• Von Hippel's site. Downloadable books and papers from an expert on Innovation.
• Web Law FAQ at Oppendahl.

Related miscellanea

• Internet Law on legal definitions.
• P3PPlatform for Privacy Preferences (P3P) Project of the W3C commission.