CNC experimenters need to learn how to create drawings for their CNC projects using a computer,
how to convert the information contained in the newly created drawing into toolpaths, and then how to
turn toolpath information into the code that will control their CNC machine, again using a computer.
This book by Square 1 Electronics ,"Easy CNC," covers these subjects in detail.
The book is hands-on and full of experiments.
The approach is the crawl-before-you-walk-before-you-run and it's fun!
Books 
