In order to build the tutorial, you will first need to install asciidoctor.
Run make to produce build/tutorial.html and its dependencies: especially, build/exercises/*.c and build/solutions/*c.
Run ./check.sh to check that all examples have working solutions (except tests with names *.error.c, which are expected to fail). Note that this step will not work until after you have installed CN, which is the first part of the tutorial.