When we were reviewing 10 of the best online resources for free books, we had a LOT of readers chime in with their own favorites as well.  Thank you for all your helpful contributions!

In fact, we had so many suggestions, we have enough to compile a huge list from them, so here they are in no particular order:

1. ManyBooks – Free eBooks for your PDA, iPod, or eBook reader – Thanks Tony Bryan & abben
2. BookCrossing – Where real books are released into the wild to be found by others – Thanks Engtech
3. LibraryElf – The perfect companion to a public library system – Thanks Engtech
4. Scribd – Open library to publish and discover documents online – Thanks CincauHangus
5. Word Public Library – 400,000 PDF ebooks for download – Thanks Ellen
6. Free Tech Books – Free computer science and engineering books (+ lecture notes) – Thanks Ellen
7. Bookins – Swap real books with other readers – Thanks Jimbob
8. WellToldTales – Free short story podcasts (like audiobooks, but shorter) – Thanks Kevin C.
9. Wowio – Public domain, free legitimate copyrighted materials & one of the only with a selection of Comic Books – Thanks Jane and Art Dardia
10. BizBooktalk – Free book giveaway contests on Fridays – Thanks Brandon
11. MoochMuch – Organize your book lending with your friends – Thanks Bobby
12. CHMPDF – A collection of general interest and technical ebooks – Thanks Manish Garg & Brian Di Croce
13. Realtime Publishers – free IT eBooks by many of the world’s best authors – Thanks Kevin
14. FrugalReader – Trade Books for free – Thanks Brent
15. TitleTrader – Swap books, movies, and music – Thanks Brent
16. ZunaFish – Trade your old media and books items for new titles you’d rather have – Thanks Brent
17. SwapSimple – Swap your used books here – Thanks Brent 
18. SwapThing – Community of users who swap items including books – Thanks Brent
19. BookCart – Internet paperback exchange – Thanks Brent
20. SF-Books – Exchange Sci-Fi Books here – Thanks Brent
21. PaperbackSwap – Swap books for free – Thanks jane dough, IBelieveInFairies, & Lauren
22. PinkMonkey - 450 Study Guides / Booknotes / Online Chapter Summary Notes and Analysis – Thanks Spellchecker
23. eBookWorld – Technical resources – Thanks 5n7p3r
24. Flaxx – IT and computer books – Thanks tejinder
25. Baen Library – Free science fiction and fantasy novels – Thanks lanthus & Glen Davis
26. LibraryThing – Social networking and free books – Thanks Michael
27. Online Books Page – Facilitates access to books that are freely readable over the Internet – Thanks Aman
28. Podiobooks – free audiobooks that you can subscribe to with iTunes or any other podcatcher – Thanks KJToo
29. BookRags – Research material in the form of eBooks – Thanks Henry Delany
30. Technical Books Online – Old tech books from the “vacuum tube age” of electronics- Thanks obiewiz
31. ebookSearchr – Google powered Thanks Rico & Rokker
32. Internet Archive – The Intenet indexed – that includes a vast text library – Thanks jojo
33. BookYards – Books, videos, education materials- Thanks Victor
34. Memoware – Free books for your PDA – Thanks Doug
35. DocStoc – online document sharing website. the “YouTube of documents” – Thanks Sean

The items below were taken from my original Top 10 list with full reviews (here and here)

1. Gutenberg Project Top 100 – Popular books from the oldest producer of free ebooks on the Internet
2. BookMooch - Community for exchanging used books
3. ebookSpyder – Specializes in technical books ranging anywhere from C# to AJAX
4. Google Book Search – Read the classics online
5. Dwalin – plain text novels
6. Free Computer Books – Technical resources about computers
7. Librivox – Audio works and podcasts of books
8. CliffsNotes – Get the notes to cram for the exam
9. WIkibooks – Free textbooks
10. DailyLit – Receive small parts of books via email

One of the values I try to live is “growth.” As part of that quest, taking control of my continued education and intellectual improvement is crucial.  We live in an age of such democratization of access to resources that can be used to learn– we just have to take advantage of them.  Lots of online self-education lists focus on giving the largest amount of links possible, regardless of how useful they actually are.  Instead of copying that format, I decided to focus more on the quality of the websites.  The following sites are a great base for your own growth as an intellectual individual.

Ebooks
1. Project Gutenberg: Over 30,000 free ebooks. Consists of books that have expired copyrights in the United States. If it is an old book, chances are you can find it here.  Downloadable in many formats so you are sure to find one that works best for you.
Recommended Reading: Theodore Roosevelt; an Autobiography.

2.ManyBooks.net: Over 25,465 free ebooks available for download.  A much prettier site than Project Gutenberg. It has some cool features like “special collections,” “user’s public bookshelves,” and “cover image gallery.”
Recommended Reading: The Art of War by Sun Tzu.

3.Bartleby.com: Another expansive ebook directory. Also includes impressive reference and poetry sections.
Recommended Reading: Inaugural Addresses of the Presidents of the United States.

Video (non-lecture)
4. Hulu News & Information Channel: Most of you probably realize that Hulu is a great resource for watching T.V. shows online. However, not only is it a great place to catch your favorite prime-time shows, but also many educational programs.  This channel has full episodes from National Geographic, NOVA, Biography, The History Channel and many others.
Recommended Watching: The Last Days of World War II

5. PBS Video: Tons of free and full-length episodes of all sorts of educational videos.  Anything you’ve seen on PBS you can probably find on this website.
Recommended Watching: American Experience.

6. MoviesFoundOnline.com: This site provides links to a multitude of documentaries found on YouTube, Google Video, and other streaming video services. The quality of the movies varies greatly however, so beware.
Recommended Watching: 10 MPH

Scholarly Journals
7. Directory of Open Access Journals: The aim of the website is to increase the visibility and ease of use of scholarly journals. It focuses on open access (i.e. free to use) scientific and scholarly journals.

8. Google Scholar: The premier web search for finding information from articles, theses, books, abstracts and court opinions.  Like regular Google Search’s really smart older brother.

Lectures (video and/or audio)
9. TED: TED is a conference held every year that brings innovators, inventors, intellectuals and ideas together.  Most of the talks are approximately twenty minutes long and cover an incredible range of topics.  It is impossible to spend time on this website and not be inspired.
Recommended Watching: Lewis Pugh swims the North Pole or John Wooden on true success

10. Academic Earth: From their website, “Academic Earth is an organization founded with the goal of giving everyone the access to a world-class education.” Here you can find entire courses worth of lectures on a huge array of subjects from some of the world’s top Universities and professors, including Yale, Harvard, Princeton, and MIT.
Recommended Watching: The Philosophy of Death by Shelly Kagan

11. Forum Network: A website formed of a partnership between PBS and NPR that gives access to video lectures by some of the world’s foremost scholars, authors, artists, scientists, and policymakers.
Recommended Watching: NPR’s “Who Needs Libraries?” Series

12. iTunes U: Within the iTunes store you have access to a growing library of lectures from some of the world’s top universities.  The iTunes Store interface makes it easy to locate lectures based on topic and best of all, it is all free.  Download the lectures to your iPod for some serious learning on the move.
Recommended Listening: Introduction to Ancient Greek History by Yale professor Donald Kagan (iTunes link)

Intellectual Reading
13. The Browser: “Give us 15 minutes of your time, and we will give you everything that matters in the world.”  This website collects journalism from around the internet which they judge likely to be of lasting value to the general intelligent reader.  Also has a section where they invite experts to recommend the best reading in their given fields of interest.
Recommended Reading: America wakes up to the shift in global power from Times Online

14. Longreads: This twitter feed provides links to “long reads” throughout the internet.  If you’re craving something longer than the average blog post, check this site out.  Works great in conjunction with Instapaper.

Tools

Instapaper: Found something to read but don’t have time to read it right now?  Maybe you want to read it on your iPhone later?  Use this website and it’s bookmarklet to easily save articles for later reading.
Check This Out: Instapaper Frequently Asked Questions

Evernote: Great note taking app and database manager. It can hold any piece of information you throw at it, including articles, notes, pictures, audio files and more.
Check This Out: 14 Practical Ways to Use Evernote

RefSeek's guide to the 25 best online resources for finding free educational videos. With the exception of BrainPOP and Cosmeo, all listed sites offer their extensive video libraries for free and without registration.

If you have good high-speed bandwidth, then here is a great starting place to find all sorts of educational videos.