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Instead of nonsense browsing (like here on xpt.de) you should do something more meaty in front of your screen. Check these out:
Videos and Lectures
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- KhanAcademy.org  |   TED.com  |   UnplugTheTV.com
Learn New Things
- FuckingHomepage.com  |   IfEveryoneKnew.com
Study At A University
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Testing Knowledge
- FreeRice.com  |   LizardPoint.com  |   MathRun.net
Teach Yourself Something
- OpenCulture.com  |   NoExcuseList.com
Youtube Channels
- SciShow  |   CrashCourse  |   MinutePhysics  |   TEDEducation
Related posts:
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