Hello, WOTH! Let me see what I can do to answer your last 6 posts 
1) For creating user tools, like what Ken was talking about, its extremely easy. Just give Accordance a plain text, or simple HTML file, and it can import it into a tool directly for you - no tagging required. Or you can type in or copy/paste in your information and, again, no tagging required. Accordance will automatically make everything searchable and linkable to the rest of your stuff in your library. Now, the two things you can 'tag' are titles and scripture references. You'll want to tag where the titles are to make a nice Table of Contents (though some html formatting can help do this automatically). You'll also want to tag the scripture references, so Accordance knows where they are (again HTML can help with this). What I'd do is just play around, see what it can import, and you can always edit or import again.
2) For the diagramming, I'm not a Greek or diagramming expert, but I know what you can and cannot do. The diagram window is quite powerful and gives you a variety of objects to help build your diagrams. Try it out in your demo - select some text (English, Greek, Hebrew, whatever!) and select 'Diagram' from the Language item on your toolbar, or from the Amplify menu. There you'll see all the items in the palette to add to your diagram.
3) The ZPEB was only available as part of the Zondervan Scholarly Suite for Accordance, which has been discontinued due to contracts (I believe). You can still find sellers of the content online, and you can easily add it to any Accordance 9/10. I believe we are also working on updated contracts that allow us to sell the books individually, but for the time being the Scholarly Suite is the only way to get it.
4) To cycle through hits within a resource, use the blue arrows at the bottom. The Mk buttons (Mark) are the ones you want, that'll go through each hit in the resource, though you can also navigate by Article (for tools) or Verse, Chapter, Book (for texts). Finally, you can use the tool's gear menu to change 'Show Text As' to just your hit Articles or paragraphs, so you see all the hits right there.
5) Thanks for pointing out the ESVS issue! I think this is a demo-specific bug, where some crosslinking is trying to find ESVS, which is part of the Accordance base packages, but not the demo. We'll get this fixed, so thanks!
6) Accordance can easily save all of your open workspaces when you quit, just have its Startup set to 'Last Session' in its General Preferences. You can also save individual workspaces, or the entire session, as a file and open it whenever you want.
7) Accordance also works perfectly fine as a reader, such as if you want to just read Josephus - just open it from your Library! It has a nice variety of themes to help with legibility, or you could enable reading mode for distraction-free reading. You could also use an auto-scroll, and have it move forward. (all of that is in the gear menu!) So, while Accordance is certainly very powerful for searching, we try to make it easy to use just when you want to sit and read.
8) Topic searching has a variety of options, depending on what you want to do. You could start with a Search All of your tools for the topic, or specifically do one of your topical resources, or amplify to a workspace that's set up with a variety of tools that give you exactly what you want for the topic. I'll let others comment more on this one, though.
9) What Logos calls clause searches are basically syntactical searches. We have syntaxes of the Greek and Hebrew (no English, sorry!) that enable you to easily search for subjects, verbs, how they relate to each other, etc. You could then compile the results, or just simply see the information as you work. Take a look at Accordance's Syntax Databases if that seems interesting! They are currently being actively developed, so as new books are ready, you'll get them as free updates.
10) I think its a good point to consider, what are you looking for? As you say, if all he wants is a resource to read, Accordance may be a bit more than he was looking for. But, if its something where he'd want to study a passage or word that he came across while reading, or any of the other things you've been discovering in Accordance, that changes the picture a bit.
11) Accordance lets you comment in 3 ways: You can highlight passages or verses, and customize your highlights to represent and look how you want them to. You can also add user notes to verses, like your post-its I believe. You can also use the user tools I mentioned earlier to keep a more static set of thoughts that aren't tied to a particular passage.
I hope this helps! Feel free to keep posting any questions, thoughts, or anything else!
