Cinemassively: Getting started with voice chat in Second Life
Torley Linden is a tutorial-making machine! Her how-to's are great for the starting resident of Second Life, but might also teach the older enthusiast a thing or two. If you need instruction on a specific subject, there's actually a video tutorial wiki page.
Yesterday, Torley did a whole series of them on voice chat. The video above is on getting started, but she also has videos on who's speaking, etiquette, improving your hearing, private calls, speech gestures, and disabling it for yourself and your land. These clips are in easy to digest lengths of just under one minute to almost four, depending on the complexity of the problem!
