Teach Yourself Logic — suggestions? [Repost]

[I posted this back in August: and I’m moving this to the front of the blog to invite more contributions/suggestions!]

I haven’t looked at all at the Teach Yourself Logic Study Guide since the 2015 version came out on January 1st. I earlier had it in mind to do a mid-year update in time for the new (northern hemisphere) academic year: but that bird has long flown. The main Guide continues to be downloaded eighty or more times a month. It certainly seems to serve some need, and I get appreciative emails.  So I will put time aside over the coming months to get a 2016 version ready for next January 1st.

So now’s the time for feedback on both style and content. As far as style goes, while keeping to the spirit of the present Guide, what would make it more user-friendly? Should I keep the one-big-PDF format, or go over to a suite of webpages? [Added: after thinking a bit, I continue to incline strongly to the PDF format — it is easier to maintain, but also easier to read off line, and for students to work with by highlighting, commenting, etc. onscreen. But thoughts on style/layout etc. are still very welcome.]

As to content, any suggestions for additions, improvements? One thing I’ll want to say something about is The Open Logic project [added: I’ve posted some thoughts that  recently] But are there more conventional new(ish) publications, or overlooked older publications,  that could definitely rate a recommendation for student use?

Feedback from logicians at any stage of their career, whether taking first steps or on their zimmer frame, will be most welcome — either in the comments below, or by email (address at the bottom of my “about” page here).