I was introduced through Byrne's book, mentioned by David Morgan. I also read a lot on the web.
If you didn't already, you have to see James Gaskins materials, including the plugins he and his team make for amos (search for "amos gaskin" on youtube).
As for slides, there are many "little introductions", but these by Daniel Stahl go several steps further: https://pt.scribd.com/document/120361553/Direct-and-Indirect-Effects (sorry, I can't find a direct link).
You may also be interested in my course on Udemy: https://www.udemy.com/course/confirmatory-factor-analysis-with-amos/?couponCode=9FE45F1E896A4522869C