LaTeX Tutorials on YouTube
There is a growing series of high-quality LaTeX tutorials done by the folks from ShareLaTeX an online LaTeX editor. The tutorials are not specific to the editor functions so they are good general resource if you want to get a first impression on a particular topic. So far you will find a beginners series, a beamer series, a thesis series and a series on TikZ is just about to be released.
Visit the ShareLaTeX channel on YouTube.