we just finished a project that was a lot more work and took a lot longer than expected, but it turned out really well i think: the 2nd Edition of the MNT Reform Operator Handbook!
extensively overhauled including coverage of many updates to hardware and software that we made over the last 3-4 years, it's now online in 2 formats:
HTML: https://mntre.com/reform2/handbook/preface.html
PDF: https://mntre.com/media/reform_md/mnt-reform2-operator-handbook-2nd-edition.pdf
and available in a new hardcopy run in our shop: https://shop.mntre.com/products/mnt-reform-operator-handbook