I have the 1st edition, and it's been very helpful as well as entertaining. The huge effort shows, and I'm really looking forward to the next version!
Here's a few to get you started:
- How to test papers, proper sharpening for an image without wasting ink and paper unnecessarily
- How to identify what's the "best" level of sharpening for each image type and paper
- How to choose optimal rendering intent for each image and how to manage out-of-gamut colors in general
- How to prepare and print images which don't have the same requirements as "traditional" landscape images, eg. high-key portraits, soft-focus images from old lenses or Lens Babies, sepia, etc. - in case it's any different
- Adding noise/digital grain is popular for a certain look, or to hide edits and banding, but how much is a good amount to add for print and screen - it's clear the amount should be different
- How to adjust noise reduction from for-screen to for-print
- How does paper choice work with different image content and end-use - glossy, matte, baryta, canvas, etc.
- Updated guidance on when to upres/downres, and does paper choice or image content impact that choice
- To spray or not to spray (longevity, protection, gloss)
And I'm sure I'm not the only who expects a shirt challenging the gamut of our monitors
edit: fully agree with Mark on color management (and other points). My modest dye Canon i9950 with affordable Red River Papers went from disappointing to wow
when I got a custom profile made, and calibrated my monitor. Emphasizing the need for a fully color-managed workflow and the basics of it is probably the #1 thing to improve one's prints.
Expanding on his last paragraph, it might be useful to have tiers of print output quality, along the lines:
Tier 0 - Have printer, press print, pray
Tier 1 - Invest in color-managed workflow
Tier 2 - Above + sharpening and noise reduction
Tier 3 - Above + testing papers
The idea would be to prioritize what makes the biggest difference in output quality, and building up on that towards the perfect print - if such a thing exists - while being mindful of diminishing returns on time and money the higher tiers one reaches.