There is a legal way to download content from YouTube right to your computer, you need to install a YouTube Downloader. Since there are many different YouTube downloaders available online it would be in your best interest to screen each one of them in detail until you find the one you like the most. The first question is who is distributing the software ? The vast majority of the firms that make this software are legitimate but not all of them, what you need to do is look into the track record of the company offering the YouTube downloader to make sure they are reputable before you install their software into your computer.  Once the software is in place you can download all of the content you want from YouTube.