22 Killer Websites that Make You Cleverer7.1k views
These 25 websites, which you probably don't know, can learn you a lot of interesting stuff about all kind of topics. From free e-book stores, all kind of courses and mind tools to learning how to date. They can come in handy and help you in your daily life.
This isn’t the first time I’ve recommended this language-teaching website (and app), and it certainly won’t be the last. Duolingo is a free version of Rosetta-Stone that delivers the same results: teaching you another language. Regular use of the site can have you speaking and writing Spanish, English, German, French, Portuguese and Italian in a matter of months depending on the diligence you put into it. Hopefully, even more languages will become available soon.