
I have no training, skills, or natural aptitude for mechanical
engineering. However, I was working with mechanical engineers, so had
to take a quick look.
As with most engineering fields, you need the math to solve
nonintuitive problems, simulation software where math is too complex,
and practical experience doing real projects.
 bralla2007
JG Bralla. "Handbook of Manufacturing Processes" Industrial Press,
2007. ISBN 0831131799.
First describes the std manufacturing processes (e.g., casting,
ceramics, machining), and then uses that to describe how various
products are made.
 greenwood1988
DT Greenwood. "Principles of Dynamics", 2nd ed. Prentice Hall, 1988.
ISBN 0137099819.
Dynamics, orbital mechanics, rigid bodies, systems of particles,
Lagrangian, etc.
 machbk28
"Machinery's Handbook", 28th ed. Industrial Press, 2008.
2000 pages of absolutely fascinating details of machinery. I read it
covertocover.
 hall1961
AS Hall, AR Holowenko, HG Laughlin. "Theory and Problems of Machine
Design". Schaum's Outline Series, 1961.
The usual: Theory, derivations, and solved problems. It gives a
context to the Machinery Handbook.

