This section is simply a gathering of wisdom, general style guidelines and hints to creating good GTK applications. Currently this section is very short, but hopefully it will get longer in future editions of this tutorial.
Use GNU autoconf and automake! They are your friends :) Automake examines C files, determines how they depend on each other, and generates a Makefile so the files can be compiled in the correct order. Autoconf permits automatic configuration of software installation, handling a large number of system quirks to increase portability. I am planning to make a quick intro on them here.
When writing C code, use only C comments (beginning with "/*" and ending with "*/"), and don't use C++-style comments ("//"). Although many C compilers understand C++ comments, others don't, and the ANSI C standard does not require that C++-style comments be processed as comments.