Prior Incantato: The last book you read
Alohamora: A book that introduced you to a genre you had not considered before.
Illuminae was the first "hardcore" (for lack of a better word) sci-fi I've read. It is absolutely brilliant and I am definitely considering reading more sci-fi books with epic spaceship battles (and all that jazz) now!
This book is absolutely PHENOMENAL. YOU MUST READ IT!!!!!!
Obliviate: A book or spoiler you would like to forget having read.
That one really big spoiler for Allegiant... Umm thanks for that? It caused me to completely lose interest in the series (I had only read Divergent at that point), so why bother if I knew what happens in the end?
The version of Harry Potter and the Order of the Phoenix that I own is hardcover and 870 pages. I am pretty sure that it could be used as a weapon.
Accio - an upcoming release you wish you could get your hands on right now
I NEED THIS BOOK IN MY LIFE RIGHT NOW YOU DO NOT EVEN UNDERSTAND
Cheering Charm - a book that gave you all the warm fuzzies
Pretty much any book by Jennifer E. Smith! They're such cute contemporaries!! Even though the characters do have some underlying difficulties, overall they are pretty light and fluffy.
Aguamenti - a book that made you ugly cry
It was totally worth all the crying though. It pulls at your heartstrings, this one does.
Expecto Patronum - bookish hero or heroine you want around to protect you in real life
Lumos - a book you intentionally spoiled for yourself
Okay this is kind of a long story but basically I had just been spoiled for Allegiant and wanted to make sure one of my favorite characters didn't die so I asked my friend who had finished the trilogy to tell me if the person died, and then she ended up telling me 1000000x more than I wanted to know and I was really mad at her for a while...