When you begin looking into anything new, it can be quite confusing and so it is when you begin looking into the Hermetica.
But once you find out what the keys are, things become much easier and from there you can decide how far you want to go.
What I’ve found looking into the Hermetica, the keys for understanding it is looking at and understanding these:
The principle of Mentalism
The principle of Correspondence
As these are at the core of the Hermetica.
Then I’d look at the key points of the Hermetica to develop a greater understanding, they being:
Disassociate from the ego
Think for yourself
Draw your own conclusions
Use your Nous for good
And learn the rest of the principles:
Cause & Effect
That will give you a greater understanding and then if you want to go further than that, start looking into the details to start learning about the nuances and the intricacies of the Hermetic Philosophy.
Understanding the concepts and the keys is the shortcut to learning a lot in a short space of time