Finding Help For Dashboard Exercises for Client

I am finishing up a website for a client (yay!) using WP. Of course I’ll walk through how to work the plugins I’ve installed and anything specific, but this is the kind of client that will email me all day about silly stuff – the time waster kind if you know what I mean.

Is there documents online that I can point my client to when asking questions of “how do I make a post” or “how do i make a page” or “how can i add stuff on the side menu (widgets)”??? I would much rather send them to a good resource that covers the primers, and then answer specific questions after that. Any help would be great, because most documentation on here is questions a developer would ask, not a business exec that has no idea how to turn a computer on, much less make a WP post.

Also – totally unrelated, but for about ten times I try to login to make a post and when I click go it sends me to a blank white page. On the 12th go it will finally log me in. Hopefully it is just me.