Very appreciated. I'm trying to make small hobby projects with a simple C and Makefiles, to get a taste of a stripped-down, basic environment, and after I got accustomed with basic Makefile usage (which is taught in any of thousands tutorials on the matter), I found myself lacking coherent and easy to read material that would get me to a more advanced level. Tutorials and stack overflow questions either cover really basic stuff or suggest things that seem like awful practice in the first glance, and GNU Make manual is written in way that suggests you sit down and read it for a few hours instead of just giving you a quick and sane way to solve a particular problem.