Kitchen Design is an area that is complex as I am sure you understand.

With the swirl of options available in the modern kitchen world know that it will take time.

Learning Kitchen Design is a skill..

#1 Document Folders for Each Kitchen Area
Note all of the steps

Learn
4 basic kitchen layouts
COLU Kitchen Layouts
The Corridor kitchen.
The One – wall kitchen.
The L kitchen.
The U kitchen.
Learn variations to these layouts

Learn Kitchen Styles
Styles of Kitchens
Traditional
Country
Contemporary
Additional Kitchen Styles

Learn Cabinet Choices
Cabinet Construction
Cabinet Manufactorers

Learn Cabinet Measuring Techniques

Learn Kitchen Surfaces
Walls
Ceilings
Floors

Learn Sinks and Faucets styles

Learn Countertops
Concrete
Laminate
Metal
Stone
Solid Surface
Tile
Wood

Learn Appliances

Learn Kitchen Lighting
Natural Lighting
Artifical Lighting

The web site
New Kitchens 101 Free Kitchen Planning Lessons may be your answer. Although newer in design, and adding pictures illustrations to the information couldn't hurt, there is ton of kitchen resources for someone like yourself.
http://www.brandsconstruction.com/Blogb2/blog5.php

Kitchen Planning
http://www.brandsconstruction.com/Blogb2/blog5.php/New-Kitchens-101-Kitchen-Lesson-1/

Countertop Selection
http://www.brandsconstruction.com/Blogb2/blog5.php/New-Kitchens-101-Kitchen-Lesson-4/

Kitchen Layouts and Triangles
Kitchen Lesson 5

Dangerous Kitchens and Kitchen Safety
Kitchen Lesson 6

Kitchen Planning
Kitchen Lesson 9

The great thing with kitchen forums like the above is that you can comment on anything you do not understand. Someone will be sure to answer you and even set straight any info that isn't accurate.

Entering information into a kitchen desig program and understanding working with a CAD program I am sure is part of the companies program that they will cover with you.

Learning Sales Techniques will be also be important.

Wishing you the best!
Hope this helps!