/book ## to get to a page number, pickup spell with cursor as normal, then hit hotkey number to scribe to that spell slot that is in said hotkey. (Its fine if hotkey is just the gem slot dragged over or if its a '/cast 1' line. Either way)
Oh. My. God.
I did not know you could do this.
Juuuust, in case there is anyone that didn't know this
also, you can move spells around in the book using right click.
For the love of god, keep your spell book organized by type and frequency of use.
P1-2: all my main offensive damage/debuffs, with P1 having them in order of my main spell lineup
P3-4: all my buffs, all pet spells
P4-5: all undead spells, common utility spells
Note that when I say "all" it means the highest level spell in each line -- eclipsed spells go to the BACK of the book.
For a shaman, I can only imagine how bad it would be to not have stuff organized.