Are you new to computer science in general? Electrical Engineering? If so I suggest The Elements of Computing Systems. The book gives a solid introduction to how the hardware works at the lowest level, and slowly progresses up to basic OS and memory management concepts.
Throughout the book you will write a simulated computer system in an HDL language, down to the chipset (which you construct from logic gates), and a primitive OS to run on it.
The main downside of this book is that the second part of it assumes you will use Java to write the projects. It is mostly language-neutral, however, and if you already have some programming experience you can just implement it in whatever language you desire (such as LISP). I used C.