Netcool

FriedBeef's Tech has a sizable list of sites that supply free books — including ebooks for free download, and sites that coordinate swapping physical books.

"PigSpigot is an online, user-generated greeting card company that allows customers to send hilarious e-cards, Tweeting cards, and snail-mail cards to friends and family. We like to think of it as an anti-Hallmark with a wiki twist."

The Free Technology for Teachers blog does just what it says on the tin: it's a listing of free software, useful web resources, lesson plans, and hardware hints for teachers. Here's a little taste, a list of the most popular posts for April:

1. 12 Resources All Social Studies Teachers Should Try
2. Tagxedo – Word Clouds With Style
3. Interesting Ways to Use Wallwisher in the Classroom
4. 10 Sources of Educational Science Games
5. Google Docs Adds Very Useful New Features
6. Wolfram Alpha for Educators – Free Lesson Plans
7. Wiki Mind Map – Visual Webs of Wikipedia Entries
8. Ning Ends Free Networks – Try These Alternatives
9. 10 Resources for Teaching and Learning About WWII
10. 8 Wonders of the Solar System – Interactive Tour

Artist Len Peralta will draw your custom avatar for just $15. Go to Flipface and find out more.

Learn how to build a home media center, use your iPhone, get started with Linux, and much more with these 15 Free Guides That Really Teach You Useful Stuff.

Free Icons! …does what it says on the tin.

This is extra crispy cool: DriveThruRPG, an online store that provides hundreds of role-playing games for download in digital form, is offering a coupon worth over $1400 for a $20 donation to Doctors Without Borders. The package includes the game Serenity, based on the popular Firefly TV series. If you enjoy RPGs, you should go and donate now.

(via Boing Boing)

Got pictures? Need to edit them? No moolah for Photoshop? Check out these 35 Popular Free Online Photo Editing Tools.

Webdesigner Depot has an excellent article on How to Find Anything Online, covering online search techniques and relevant browser add-ons.

"The Khan Academy is a not-for-profit organization with the mission of providing a high quality e ucation to anyone, anywhere. We have 1000+ videos on YouTube covering everything from basic arithmetic and algebra to differential equations, physics, chemistry, biology and finance which have been recorded by Salman Khan."

(via linkfilter)

You people have no idea how hard it was for me not to title this post KHAAAN!

"TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions. TinEye is the first image search engine on the web to use image identification technology rather than keywords, metadata or watermarks."

ScienceHack advertises itself as "a unique video search engine for science videos". All videos are screened for accuracy and quality.

(via linkfilter)

Brainflips is another handy flashcard site, enabling you to create and share your own multimedia flashcards.

Not enough toys cluttering your room? Get a new one every day at Toy-A-Day.

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Did you know that there are 69 keyboard shortcuts built in to GMail? I sure didn't.