Yeah, give that a try. The help text hasn't been touched much I doubt since they've been putting a lot of effort into making youtube tutorials. Same info, but in a more understandable fashion. 

Here is the main page for their channel. https://www.youtube.com/channel/UCLtNyHc8Ad80vSC-3GJd70w

From there, click the magnifying glass next to About and type some search words. There's pretty much a video for any common task in SMS by now. (and some uncommon ones)