First one I got was Greeting. Then I got Scissors. I'm working on my second Rock attempt. Failed Angry, got Sad. Failed Nodding. I think I've got Point Upward, but I haven't even found self or forward yet. I miss Sulky.
My experiences are that the monster is irrelevant. You have the chance for any currently in-game book from any currently in-game monster.
So far, the only "Hard" books are Rock, Paper and Scissors. I place the success rate for all books that aren't 100% guaranteed below 50%. Probably 40-45% for Normal and 25-30% for Hard. Books that cannot be traded have a 100% success rate (ie. Funny Gestures 2-4). I don't count those in the great big emote race. But I am hoping the other gestures can be found somewhere in-game. D:
In Ragnarok Online, I was once known as Athero, a noble Lord Knight whose only wish was that he swung his sword for a just cause.
TrueSilverFox and Mon_Ami roamed Caballa together in Trickster Online, searching its ruins of splendor.
Valeria, sworn only to her sword and herself, traverses Erinn in Mabinogi with her pet silver fox, Truesilver.
"Whoa, TrueSilverFox, girl! Anyone ever tell you you look like some sun-bronzed Greek Goddess these days?"