Best sites for learning new stuff!

Instructables

Instructables is a web-based documentation platform where passionate people share what they do and how they do it, and learn from and collaborate with others as they tackle new projects and learn new skills.

The site offers how-to articles across a variety of categories including technology, living, workshop, food, outside and play. Learn how to crochet, remodel a bathroom or repair a laptop power adapter.

www.instructables.com

StumbleUpon

A collective set of recommendations from thousands of hours of searching by web users who share your interests.  It's basically a recommendation engine.  Users add to this engine by providing their personal recommendations on what sites are worth your time.  If you select topics and tags of interest like 'Self-Improvement'  and 'DIY,' you'll be learning new skills in no time.

www.stumbleupon.com

Scitable  

A science library and personal learning tool that currently concentrates on genetics, the study of evolution, variation and the rich complexity of living organisms.  The site also expects to expand into other topics of learning and education. The site was created by Nature Publishing Group, the world's leading publisher of science, and offers information for the average, curious reader as well as resources for the budding scientist (such as effective science communication and career paths).

www.nature.com/scitable

Lifehacker

An award-winning daily blog that features tips, shortcuts and downloads to help you find smarter ways of accomplishing daily tasks and completing them more efficiently. Are you looking for some tips on how to untangle your favourite necklace? A checklist for apartment hunting? A guide on "how to prioritize when everything is important" ? This is the site for you!

www.lifehacker.com

Hack a Day

Hack a Day serves up fresh hacks (short tutorials) every day from around the web and one in-depth 'How-To hack' guide each week. The site also offers hacking related news and sections on hacking software and the Android market hack. www.hackaday.com