I think you should be pretty familiar with the end of The Motion Picture; I'd recommend seeing it beforehand. And you should probably read the Memory Alpha summary of "For The World Is Hollow And I Have Touched The Sky" too.
I actually couldn't remember which TOS episode starred the Fabrini, so I went to Memory Beta first, then to Memory Alpha.
Based on the summary on MB, I've grown more interested in reading Ex Machina. To be honest, I was a bit turned off by the back cover summary.
You should probably read the Memory Alpha summary of "For The World Is Hollow And I Have Touched The Sky" though.
Ah, that's true, familiarity with "For the World is Hollow . . ." would help. I did things all kinds of backwards. I read Ex Machina, then re-watched TMP for the first time in years, then eventually got to "For the World is Hollow . . ." during my viewing of the entire original series (thank you, Netflix!). My Trek re-watch is happening in a linear fashion, but I've kind of been jumping all over while catching up on the books. But Memory Alpha helped me understand the Yonada aspects of it. (I remember being a little confused when I first read The Lost Years way back in the day, before I could do an Internet search to understand the Yonada/Natira references.)
I freaking love Memory Alpha.
