Each step outlined below is shown in greater detail in the video tutorial I attached to this post.
I realize this project may seem like a complex woodworking project, but the reason for this post is to help folks realize it is not as complex as it seems. I hope you find it interesting to learn how DIY Custom Built Ins are constructed even if you don't want to build one for yourself.
Additionally, this piece of furniture is really 3 different pieces/sections stacked on top to form a single piece. With this in mind, I organized the post in case you only want to build the bottom, middle, and/or top sections.
The first step to this project was to build the bottom section. It was important that I build this as sturdy as possible because the middle and top sections will sit on top of it.
I started by ripping 3/4" plywood to size. Next, I attached the 2 sides to the bottom piece with glue and pocket holes.