Quote Originally Posted by Mraktar View Post
When we are talking about rares - yes, MLB them all, but SR/SSR - books are limiting factor for MLB, so MLB only those, who have very good improvement in second skill or SSR, that you are planing to awake. Keep the rest on LB3 and maximum lvl, they may be usefull later in tower/GO/advent challenges.

Edit: you have 2 sub slots to level up kami that you don't want to play now, use them as combat reserve only on hard content (like AQ/advent rognaroks etc.)
Good points. I did say eventually, because you're eventually gonna gather enough materials to do so.

As far as books go, an interesting source other than events would be the raid eidolon store. Of course, eidolons are the absolute top priority, but one may choose to trade for books if they wish. And besides, I believe you can get a couple of bonus eidostore points by trading in R non-enhance eidos for 2 points, which you can get like 20-40 of from the regular gemcha, if what I'm reading and remembering from gtranslate is correct.