Gambit has a built-in compiler that generates C code, which then is passed to your system's compiler which in turn compiles it to native code. This makes it easy to integrate Gambit into existing C/C++ projects.
The Gambit documentation directs you to further resources, depending on what you're looking for. Because things are separated into different places, it can be difficult to find what you need. Some documentation is only available in HTML or PDF formats that are hard to read/follow.