Authoring Guide and Assistance

Hi, I just spent a few hours doing authoring up to the ceremonial paper tier and had some useful findings:

1. There are some recipes creatable only by certain characters, likely with skill level minimums, and likely paper tier minimum (i.e. healing device++ by Elena after level 5ish with waterproof paper?)

2. Each character appears to have two books. One with a quote attributed to them, and another that says by "character name". They appear to be set at paper tier levels unique to each character, though most had one of their books at the waterproof paper tier. Possibly, Midas' second book is replaced by the gag offensive item book? I wasn't able to craft his second book at any of my available paper tiers.

3. The recipe "magic barrier device recipe" creatable at ceremonial paper tier by Midas sells for like 35k and is very easy to craft. It's fairly easy to grind a few hundred thousand fol once you hit the shop that sells ceremonial paper.

Any other findings, add here. I suspect authoring can be quite the money maker.

Also, has anyone else gotten the authoring talent on anyone besides Midas?