Thanks for the replies, all.
I'm bounding through Deakins' material with Pelican's Perch. Really fascinating stuff. He speaks highly of his GAMIjectors, which I've since read up on, as a segwayed note.
This is a practice I will encourage my instructors to teach, as deep as they dare. I want to get this in on the ground level, rather than discovering this some hundred hours into my license. Whilst I'm not afraid of that red lever (which isn't to say I don't respect it!) I also don't fully understand the art of it. Hence my post here.
Unfortunately, however, my trainer isn't equipped with EGT or CHT gauges, so I will be relying on the RPM and engine note to tell me all about leaning, for now. Thinking ahead, then, would it be wise of me to seek further dual training when I have access to an aircraft that does?