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How To: Prevent carpal tunnel syndrome

Learn how to prevent carpal tunnel syndrome. Even if you're the world's fastest typist, you can help avert carpal tunnel syndrome – a ligament inflammation that causes numbness in your wrists, hands, or fingers – by following these tips.

How To: Perform the Barus effect

Watch this instructional science video to observe the Barus effect in action. A dyed solution of POLYOX (polyethylene oxide - it is the stuff used as the lubricant on the strip found in all modern razors) is extruded from a 50 mL syringe. On exit, a marked swelling in the liquid stream several times the diameter of the orifice is observed. The effect is referred to as the Barus Effect, but it also goes by several other names including the Merrington Effect, Die Swell, and Extrudate Swell.

How To: Play "The Four Horsemen" by Metallica on rhythm guitar

Want to develop brutal rhythm technique? In this five-part video tutorial series, you'll learn how to play the rhythm guitar parts to Metallica's "The Four Horsemen" from their seminal Kill 'Em All album. Each of the series five segments takes a small portion of the song and presents it in real time as well as slow motion. While this tutorial is best suited for intermediate or advanced guitar players, guitarists of all skill levels can attempt to play along. Watch this lesson to get started p...

How To: Grind a rail

Want to grind a rail and not just roll around on your skateboard? Let our professional skateboarder show you how make the jump to the next level in this free skateboarding instructional video series.

How To: Use the simple past tense in the English language

This three part language tutorial is a grammar lesson for lower level ESL students. Learn how to use the simple past tense with this tutorial. The past simple tense, also called the simple past is used for past actions that happened either at a specific time, which can either be given by a time phrase (yesterday, last year, etc.) or understood from the context. Regular Verbs add -ed to the base form, or -d if the verbs ends with -e. Irregular verbs can change in many different ways. Watch thi...

How To: Perform the basic two handed spiral for poi

Perform the basic two handed spiral poi move with tips from this how-to video. This poi how-to video is for beginners and those at the intermediate level. The basic two handed spiral poi move is also known as hand spirals, spiral wraps, and double hand-wraps. To do this poi move, you need to have good split-time and wall-plane control.