NAV 2009 - Where to find the original Microsoft documentation?

drewb

My employer wants to buy a book for me to help with learning the native functionality of NAV 2009 classic client. I've been looking at the book "Microsoft Dynamics NAV 2009 Application Design" by Marije Brummel and I'm only looking at the preview's from Amazon/Google so I can only see a limited number of pages but at the start of chapter 1 there is a short paragraph:

"This book is not a manual for Microsoft Dynamics NAV 2009. It should give a clear idea of how the structure of the application is laid out and about its possibilities. We do not want to replace or rewrite the Microsoft Documentation but rather want to provide ideas you might not have thought about."

I've looked at learn.microsoft.com but all the documentation is for more recent versions of NAV.

Is there a site that has the original documentation for NAV 2009?
What is the best resource for learning the functionality of native NAV 2009? Preferably it shows examples using the classic client.

Developer101

What kind of documentation do you require?
Is it functional or technical?

drewb

Both functional and technical. I guess I'm looking for the "manual" for NAV 2009. Something that explains how the ledgers work, the intended way of creating sales orders and returns, and other basic native functionality. It would be nice if the documentation explained how to utilize the software and explained what tables are being used as well.

I know it's kind of vague but you don't know what you don't know. To put it succinctly, how would people who know nothing about NAV 2009 learn NAV 2009?

Edit:

I've found some pages indicating that there were old courses related to various topics. Such as "Microsoft Dynamics NAV 2009 Introduction (80043A)" and "Microsoft Dynamics NAV 2009 Application Setup (80049A)". I'm assuming these were some type of paid training from 15 years ago that Microsoft or partners offered. Are these resources that are freely available anywhere?