Here is the basic model I created, it took a number of attempts to create this as I was over complicating it the first 3 times and I was going over the max poly limit. On the final attempt I was able to do it correctly by creating the basic box which I then extruded inwards and connected the correct vertices. Once I had the basic square shape I added roundness to the binding of the book by pulling out the edges necessary until it had a satisfying roundness. To then add more detail I pulled out the corners of the front and back cover to add the appearance of age to book. After I added the strap to the book, I did this by starting with a basic box and then extruding and scaling until I had the shape I needed. The finished model had 254 poly's
Once I was satisfied with the model I UV unwrapped it, since I still dont know how to properly do this quickly, I had to unwrap and sew each one individually ( I will need to learn how to do this properly soon ). I then arranged it like this to they all fit into the area well at a good scale.

I started out by merging to different leather textures together and editing the brightness/contrast and opacity. with the first texture I scaled it down so the detail wasn't too large, I then used the clone stamp tool to fill in the rest of the area

Here is the basic texture, I then added two lines to mark the edge of the book, I used a black and lowered the opacity, I then used outer glow to give it some depth.
I then began to add text and a logo, I used an item from an Anime as reference and used some images from the series. the actual book in the Anime is too simple so I added more text and an image to make it more detailed. with the images I changed it to screen mode and lowered the opacity and darkened the image so it blended in with the book so it didn't appear to just be thrown on.
Finally I added borders around the edges to add more detail and give it a better appearance of a book.
With the strap I used the same texture with the book, I then added silver circle at one end to give the appearance of a button to unclip the strap. I then found a stitch texture which I cut up, darkened, lowered the opacity and then duplicated around the border of the strap to make it look stitched which I think worked very well.
I found a book with withered pages, I then cut out the rest of the book and used transform perspective to make it a flat image, I then copied them and placed it to fit in with the book. with the long part I duplicated the image and flipped it so it would align with the pages at the edges.
Here is the final rendered image of my model at different angles











