Books won't show up on my Literati.

I am so frustrated. I've read every forum and post about my eReader. I've downloaded ADE, I've authorized my computer and my eReader. I've dragged and dropped the book I bought to my Literati, it shows up on the computer and when I connect my Literati to my computer, but when I disconnect it to see my book on my device, it's not there. It's not in my Documents, or Books. I'm very frustrated. I've deleted it on my computer and readded it. I've turned my Literati on and off. Where the heck is my book at? I mean, I can read it on my computer, but that's annoying. I can't SYNC the book because it won't connect to any wifi. If anyone can help, I'd appreciate it. Thank you