Physics is the Art of finding things out. Hear Feynman talk about it:
Not part of physics, but related:
See also the other scales.
This is great material: a Physics journal that is not at a Research level, so free of the conventions and terseness required for such a format. However since Physics is intrinsically a Research topic, the content typically covers original issues.
One of the best resource of AJP is their resource letters, whose list is compiled there: AJP Resources Letters.