SQL is a standardized query language for requesting information from a database. You can verify your knowledge by trying to answer a few simple questions.
Let Google, with the help of their secret X Lab explain in a fun way, that even the non-science savy people shouldn't experience difficulties understanding the basics behind Quantum Computing and A.I.
An interesting video where a guy explaining why he believes that we have landed on the moon and tells also about waving flag, shadows and everything else.
If you don't want anybody to see your profile on your computer you can lock it with the password. In this lesson I will show you how you can set different password options to log in, in Windows 8.