Buttons/Tabs not sure exactly what they’re called. But then the layout you see will probably differ from what I see as I’m on a computer with full sized monitor.
Sorry if I’m confusing you, I just thought one of those buttons would naturally lead to instructions on how to use this site. There just doesn’t seem to be any obvious place on the screen for that and you’d think there would be 
And now that I’ve explored them a little more, I don’t think they’re of use to you for what you want. I’m assuming you want to know how to use the site, create posts, edit, search, and so on. The video links Mahoney posted above is still more useful or use the MSG-bot I mentioned in your other post.