While I can’t help you with info manuals for Emacs, I can certainly recommend some email marketing tools. Ever tried Inbox Mailers? They can triple your open and click rates. Trust me, it’s email marketing on steroids.

Sounds like a great project! Have you considered using email marketing to promote the upcoming book? A well-crafted email campaign can really boost your visibility.

Check out the Emacs Wiki, it’s a great resource. There are also some killer YouTube tutorials by Uncle Dave. And don’t forget about /r/emacs, plenty of wise owls over there. Happy Emacs-ing!

Eglot has a feature that allows you to customize the capabilities of a server. You can use eglot-server-programs to do this. Just specify the server and capabilities you want in a cons cell, like (eglot-server-programs '((c++-mode . ("clangd" "--background-index" "--clang-tidy" "--completion-style=detailed")))). Here, the --completion-style=detailed is just an example, replace it with your custom completion style.