Good start! I've been recommending AstroStace for some nice tutorial walkthroughs of Astro Pixel Processor; Sara Wager also has some good short ones but you're probably already beyond those. Mabula himself has produced some good stuff but his tend to be a little less helpful to me, ironically, because he knows the software so well. For me the canonical example is his demo of the remove light pollution tool, he just draws some boxes without really explaining why he's putting them in specific places and of course his selections magically work.
If you're going to "black-box" it, you should know that you don't have to go through all the intermediate tabs, you can just load your lights and calibration frames, go to "6) Integrate" and click Integrate. That will run all the preceding steps for you.
But what's the fun in that? :-) I do recommend that you at least start with the "Analyze stars" button instead of going straight to "Integrate", because that will give you scores in the file window that you can use to cull your subs. I usually go back to the Load tab, scroll down to the sorting tools, select "quality", and click the "best to worst" / "worst to best" button (it doesn't seem to sort them until you've clicked the button at least once).
Then you can go to the worst-scoring sub in the list, double-click to view it, zoom in, and judge whether it should be included in the integration. After that you can use the up- or down-arrow to view the next sub in the sort (no need to keep double-clicking). Once you've unchecked the baddies, you can integrate with style and verve.
Or you can become an obsessive Options Nerd like some of us. "...what does THAT slider do, I wonde--YIKES!"