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How To: Change heads in Photoshop

Changing heads is a fun, easy, and valuable technique for beginners that can help build up their confidence in Adobe Photoshop. This Photoshop video tutorial will walk you through the process of extracting the head from one body, resizing it, and blending it on to the body of another picture. By the end of this tutorial, you will become familiar with some basic tools used in Adobe Photoshop, and at the same time, you will learn how to successfully switch heads from one body to another.

How To: De-ice the windshield on your car

If you live in a snowy area then you probably know all too well the annoyance of having ice and snow build up on your windshield that you have to clean up in the morning before you leave home. There are easier ways to do it than what you're probably doing, and this video will give you great tips on preventing ice from forming and getting rid of it once it's there.

How To: Construct a small sample size confidence interval using a t-distribution

Learn how to build small sample size confidence intervals using t-distributions. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to construct a small size sample confidence interval using t distribut...