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What are the skilled trades?

That question was much easier to answer a generation ago when workers were simply divided into white-collar and blue-collar.  Not today. The lines are blurred and many old notions are turned over on their heads.

"High-Paying Trade Jobs Sit Empty, While High School Grads Line Up For University"

Read the article from National Public Radio

Master Catalog of Skilled-Trade
Learning Resources

Core Topics

Core topics are those common to most skilled trades. In fact, many are essential prerequisites.


Automotive lessons include basic theory of operation, troubleshooting, and maintenance procedures for the mechanical and electrical  systems common to today's autos and light trucks.


This is an extensive series of lessons and technical manuals that cover the major topics of modern aircraft powerplants and airframes.

Building and Carpentry

These texts are all about strengthening your knowledge of lumber, interior  carpentry, concrete, and masonry.

Civil Engineering Technology

This is an extensive set of e-texts intended for civil construction technicians whose responsibilities fall between the certified civil engineers and the construction supervisors.


These lessons cover a wide range of skills, from electrical distribution systems to domestic fuse box wiring.

Fluid Power

This series of courses balances the theory and practice of modern hydraulics and pneumatics.


This series covers the knowledge and skills for the diverse sets of tasks for heating, ventilation, air conditioning, and refrigeration.


The Plumbing series of online lessons covers water distribution systems as well as inside plumbing and fixtures.


This extensive series of free online manuals is intended for apprentice tradesmen (and women).

Copyright David L. Heiserman
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