I've ben scripting Photoshop with Javacript for a bit now*, and maybe it's time to go to the deep end and tackle Action Manager code. Trouble is, it's not well documented or widely reported. And since it's not very human readable, which makes things more "interesting" for peiople like me.
Can anyone recommend any good starting points ? - and I'm not talking about the £150 course.
* 10 years or more now...
The most difficult thing in AM is the first steps, when you need to understand how the objects that store data are arranged. In the topic at the link, I revealed one of the approaches to working with documentation and showed how to search and get the necessary data. After you pay due attention to this issue, writing data and executing functions will be much easier, since you will already understand what exactly should be placed in a particular object (especially since you always have ScriptListener.8li at hand in where you can see examples). If you have questions about specific tasks, you can always create a topic and we will try to help you.
Have you found any Action Manager £150 course you can link us to?
The same I found, but I had to ask as the only difference was the currency.
I believe that there is one chapter dedicated to AM code.