Kater, I'm sorry to hear about the loss of your father. I lost my dad too and it is so hard.
I don't have any specific titles to recommend but I do have some ideas regarding what to read that might help.
I've found that reading books about the possible spiritual connection we might still have with loved ones that have passed on really helped me. I was so sad and a few things that gave me comfort when nothing else would were the concept that he could see me, was near me, still loved me etc.. that was so important for me. I truly believe in this and that I will see him once again at the end of my life. Reading books about this subject gave me strength.
The other idea is to maybe read some books that your dad liked. My dad left alot of books behind and lately I've been looking through them and reading them. It's been neat to read what he chose to read when he was alive and see things kind of through his eyes. I know that sounds strange but it provided a connection and that's what I needed.
I hope each day gets a bit easier for you.