The Revit formula : parameters and formulas

The Revit Formula is a direct response to the 400+ page books on Revit that tend to be more discouraging than encouraging; this is a “you-can-do-it book” laser-focused on a specific topic, parameters and formulas.
The goal is to cut through the dry, illegible, and bloated tutorials written by software Engineers, and provide an affordable, concentrated, pocketable, and utilitarian guide to parameters and formulas written by a designer for designers. The Architect, the Interior Designer, Structural, MEP, the recently graduated, etc. If you work with Revit, this book should sit on your desk.
Now, while the main focus of this book is to learn parameters and formulas in an un-intimidating format, there is a secondary goal; STEAL!
There are very useful tried and tested formulas and formula combinations in this book, that can help anyone. So, if you don't have time to digest all of its content, just copy some examples and learn that way. There is no wrong way. Learn by going step by step, by trial and error, or by copying and backward engineering formulas later. Just learn.
Edgar E.B., NCARB