Knowledge of mechanics is a stepping stone to many types of skilled jobs.
Gears, cams, pulleys, rings and clips; they're all here in this book.  95 pages.

Easy to read. Great gift for son or grandson.  For kids and adults.
By Joe Jacobs, former maintenance technician for the U.S. Postal Service. 
Comes in either color or black & white edition.  Both have color cover.
Start With Mechanics
table of contents for Start With Mechanics book
Full Color version
start with mechanics book
About the Author
Written by Joe Jacobs, a former maintenance technician for the United States Postal Service.  Trained on electronics and mechanics, he has worked on everything from simple conveyors to the best industrial automation machinery.  He attended training at the Postal Service training facility in Norman, Oklahoma on equipment made by Siemens Dematic Postal Automation.
Black and White Copy
"Start With Mechanics"  -  Black and White       $9.50  (Amazon.com)  paperback
Email: contact@start-with-mechanics.com
table of contents
German edition
German edition
video preview
Spanish edition
Engranajes.pdf
"Start With Mechanics"  -  Full Color                  $19.50  (Amazon.com)  paperback