Today I've launched my Configuring and Using the Nikon Zf eBook. This 414 page tome is US$39.99 and downloadable today in ePub format. I'll make a decision about whether to produce a print-on-demand version available through Amazon sometime early next year.
The Zf is not a simple camera, despite those simple-looking dials sitting up on the top. While I can't go through everything in these shorter Configuring and Using guides, you're going to find that this little ePub is pretty densely packed with information all Zf owners need to know.
My review of the Zf is ongoing, and should be published soon. Because the camera has so many advanced features in it, it's forced me to have to retest against the Z8, which it most closely resembles in feature set. There are subtle differences, but it's a little difficult to describe many of them.
Meanwhile, I've updated the FAQ about my books, as well.