In which John Green teaches you about Margaret Atwood's speculative fiction novel, The Handmaid's Tale. John looks at some of the themes in this classic dystopian novel, many of which are kind of a downer. The world of Gilead that Atwood...

In this video Paul Andersen compares and contrasts mechanical and electromagnetic waves. Both types of waves transfer energy through oscillations but mechanical waves requires a medium. Several examples of each type of wave are included.

In which John Green continues to teach you about Slaughterhouse-Five by Kurt Vonnegut. (WARNING: When Slaughterhouse-Five was published, some of the crude language in the book caused controversy. We quote one mildly controversial line in...

How do young people feel about the U16 social media ban?Credit: Luke Reevey/The Independent

¿Cómo seguir una cuenta en Twitter?

¿Te gustaría conectarte a tu cuenta de Twitter desde tu celular? ¡Es muy sencillo! Solo sigue el paso a paso que te mostramos en este video y podrás disfrutar de todas las funciones de esta plataforma y tenerlas a la mano para tuitear...

When you do marketing research you can discover a lot of new and creative ideas on how to grow your business or how to understand your customers. With marketing research you need to develop a way to have actionable...

Howcast - Learn what makes a good tweet in this Twitter tutorial.

Howcast - Learn what Twitter is in this Twitter tutorial.

Howcast - Learn how to set up a Twitter account in this Twitter tutorial.

Howcast - Learn how to reply, retweet, and send a direct message in this Twitter tutorial.

Howcast - Learn about hashtags in this Twitter tutorial.

Howcast - Learn how to post pictures in this Twitter tutorial.

Howcast - Learn how to get more Twitter followers in this Twitter tutorial.

Howcast - Learn about TweetDeck and other third-party Twitter apps Twitter tutorial.

Howcast - Learn how to share and embed YouTube videos in this YouTube tutorial.

Howcast - Learn the dangers of online dating sites in this high school dating advice video from Howcast with expert Shallon Lester.

Howcast - Learn how to increase video views from Fullscreen founder George Strompolos in this Howcast video about how to make money online with YouTube.

Howcast - Learn how to flirt on Twitter from dating coach Rachel DeAlto in this dating tips for guys video from Howcast. Thumbnail: theinvinciblemum/Flickr

Howcast - ¿Como puede cambiar el mundo con las redes sociales y la pagina de microblogging Twitter? Ciento cuarenta caracteres a la vez.

Howcast - Learn about Dr. Paul Hokemeyer, one of Howcast's addiction experts, in this video.

Howcast - Learn how to find coupons on Facebook & Twitter in this Howcast video about how to save money using coupons.

Howcast - Learn about Maya Klausner and Harrison Tweed, two of Howcast's kissing experts, in this video.

Howcast - Learn about comedian Jared Freid, one of Howcast's pranks experts, in this video.