IKEA Billy Bookcase Hack - DIY Wall Of Built-In Shelves Tutorial. This is how we turned a blank wall into a wall of built-ins using IKEA’s Billy Bookcases. 
For more details, what we used, all your questions answered, cost, sources & more, find a full blog post tutorial on my website:
https://thesommerhome.com/billy-bookcase-hack-tutorial/