Learn

Topics

• Mathematics

Educational/Learning

• khanacademy.org- video lectures
• OpenCurriculum
• ted.com- lectures by smart people
• Brilliant.org
• Function Space
• academicearth.org - classroom lectures
• freerice.com - expand your vocabulary while feeding the hungry
• lizardpoint.com- a collection of geography quizzes
• mathrun.net- timed math quizzes
• classicshorts.com - the best short stories
• erowid.org- learn about drugs
• unplugthetv.com- a collection of intellectually stimulating videos
• factsie.com - a place to learn amazing and unusual historical and scientific facts
• 100+ Google Tricks That Will Save You Time
  • Today, knowing how to use Google effectively is a vital skill. This list links out to enough Google related resources to make you an elite Google hacker.
• 100 Skills Every Man Should Know
  • Another compilation article with instructions to help you learn new skills. This one says it's geared for men, but I think most of these skills are applicable to women as well.
• Work.com - An extensive directory of how-to guides for beginning entrepreneurs.

Online Courses

• Class Central
• EECI
• Udemy - Academy of You
• The Open Academy
• VideoLectures
• Connexions
• Udacity
• eduMedia
• ExploreLearning
• Skillshare
• Khan Academy
• Coursera
• Novoed
• Mathematical Monk - YouTube
• USTREAM
• OpenStax College
• EDU - YouTube
• Pathwright
• StraighterLine
• Course Hero
• TeachersPayTeachers
• PeepCode
• Floating University
• High School Physics Lesson
• ActiveMath Web

Skills

• Learn to Learn
• highercomputingforeveryone.com- learn to program in C
• thechesswebsite.com- a bunch of chess tactics, tutorials, and puzzles
• htmldog.com - learn html
• codecademy.com- learn to code through interactive lessons
• cookingforengineers.com- learn to cook
• digital-photography-school.com- learn photography
• memrise.com- learn a foreign language
• justinguitar.com - guitar video tutorials
• livemocha.com- a language learning community
• musictheory.net- learn music theory
• investopedia.com- learn and practice investing
• All Recipes - A complete guide to recipes and cooking tips. If you'd like to learn to be a better cook, this site is for you.
• Woopid - Watch free technology training videos. Get help and answer your computer and gadget questions with thousands of video tutorials for PCs, Macs, and various software applications.
• DIY Network - A go-to destination for rip-up, knock-out home improvement projects. The site offers expert answers the most sought-after questions regarding creative projects for DIY enthusiasts.

Game based learning

• Resource Roundup
• Playing with Math

Languages

• English
• French
• Spanish

Useful Web Apps

• mint.com- for budgeting your money
• duckduckgo.com- a search engine that isn't following you
• padmapper.com - maps out possible apartments/homes that fit your criteria
• zillow.com - another great source for finding your next home
• printfriendly.com - make any webpage print friendly
• printwhatyoulike.com - print precisely what you want from any webpage
• privnote.com - write a note to someone that will self-destruct after they read it
• freecycle.org - a network of people giving away free stuff in their towns
• couchsurfing.org - crash on someone's couch anywhere in the world
• recipepuppy.com- search for recipes based on the ingredients you have
• pipl.com - a search engine for finding people
• donorschoose.org - donate to a classroom in need
• charitynavigator.org - evaluates various charities
• govdeals.com - find cheap stuff the government is getting rid of
• newsmap.jp- popular news headlines
• radioreference.com- listen to radio channels across the nation
• jimmyr.com- link aggregator
• wepay.com- like paypal but less scummy
• heavens-above.com- follow satellites and constellations
• whatismyip.com- figure out you I.P. address
• spreeder.com- improve reading speed and comprehension
• simplynoise.com- listen to white noise
• camelcamelcamel.com- tracks prices for any product
• ptable.com- an interactive periodic table
• retailmenot.com- find coupons for just about anything
• searchtempest.com- search all of craigslist with one search
• join.me- peek in on somebody's computer screen
• thistothat.com- find out the best way to glue this to that
• woorank.com- find out what your website is missing, how you can improve it, and how to make Google recognize it better
• scribblemaps.com- draw on maps then share them with friends
• mailvu.com- video email
• rhymer.com- online rhyming dictionary
• homestyler.com - design your dream home
• wetransfer.com- an easy way to send big files
• mapofthedead.com- shows places around you to help you survive the zombie apocalypse
• pastebin.com- a place to paste text
• idlekeyboard.com- make it sound like you're hard at work
• wherethefuckshouldigofordrinks.com- find somewhere to get a drink in your area
• dropbox.com- backup your sensitive document online
• seatguru.com- find out where the best seats are on your plane flight
• unlistmy.info- find out which websites store data about you, and tell them to unlist your info
• ifoundyourcamera.net - a collection of lost cameras
• sizeasy.com- check the size of items you buy online
• sleepyti.me- plan out your sleep schedule better
• ninite.com - download all the free software you want at the same time
• ripetrack.com- find out when certain fruits are ripe
• compassionpit.com- talk out your problems with others, or help others yourself
• paperbackswap.com- swap books with others
• reddpics.com- a look at Reddit's favorite pictures
• swole.me- plan out your meals better
• weatherspark.com- a graphical look at the weather
• network-tools.com - network tools
• amazon.com
  • the best place to buy things online
• writecheck.com - correct grammar and check for plagiarism
• wakerupper.com - send yourself a wake-up call
• pcpartpicker.com - plan out your next pc build
• nophonetrees.com- talk to an actual person instead of a machine when you call customer service
• theuselessweb.com- visit random useless websites
• loads.in- find out how long it takes websites to load
• ShowMeDo - A peer-produced video-tutorials and screencasts site for free and open-source software. The large majority are free to watch and download.

Entertainment- Music, Movies, Sports, Books

• redditunes.com - Reddit's favorite music
• grooveshark.com- great place to listen to tunes
• isitback.com- find out when your favorite television shows come back on air
• literature-map.com- type in an author and they will show you others of a similar style
• runpee.com- find out the best time to run to the bathroom during any movie
• songkick.com- searches your music library and tells you when your favorite musicians play in your area
• midomi.com- sing or hum a song you don't the name of and it will identify it for you
• slashfilm.com- the best movie news blog on the internet
• nanocrowd.com- find out what movie you should watch next
• page99test.com- read page 99 of a book
• bookseer.com- get recommendations for your next read
• sbnation.com- awesome community of sports blogs
• justthefirstframe.com- just the first frame of today's webcomics
• music-map.com - find similar musicians

Other Interesting Blogs

• artofmanliness.com- learn man stuff
• johnnywebber.com - hobbies, habits, and personal growth
• thedailymiscellany.com - daily tips, DIYs, ane more
• getrichslowly.org- personal finance advice
• brainpickings.org- a human-powered discovery engine
• fivethirtyeight.blogs.nytimes.com- a look at politics through the numbers
• hackaday.com - a new DIY project every day
• shorpy.com- old and interesting pictures
• The Big Picture- amazing pictures covering the latest news around the world
• newscientist.com- science news
• uncrate.com- a place for stuff men love
• tastespotting.com- pictures of delicious food
• zenhabits.net- take a breath and read this blog
• foodgawker.com- more pictures of delicious food
• theburninghouse.com- a blog cataloging which possessions people choose to save from a burning home
• dwellinggawker.com- check out how amazing the inside of some homes look
• thesimpledollar.com- more personal finance advice
• veryquiet.com - world news and analysis
• mentalfloss.com- where knowledge junkies get their fix
• mrmoneymustache.com- financial advice
• studyblue.com - study tips
• lettersofnote.com - personal letters written by famous people
• Function Space - For Science learners and enthusiasts.

Reference: What are the most productive ways to spend time on the Internet?