Just like any other community, the book community has it's own jargon, slang and terms that are obvious to everyone on the inside but a little confusing to everyone on the outside, particularly the acronyms. However, this can make it confusing for new readers to get into the groove of things when they don't know what everyone is saying and what we mean when we say certain terms. Even for me, a reader who took a massive nearly 10 year break, when I got back into the community, there were a lot of new terms that took me a while to fully understand what they meant.
So I chose a good number of terms whose meanings I think aren't 100% obvious, separate them into sections where they would relate to one another, and I'm going to define the terms. Hopefully a lot of new readers will find this helpful!