As hsc has become a bit slow, a fast CPU (>=68030/25MHz) is recommended.
hsc works best in combination with make.
There exists several sources for beginners, and this won't be page #1876545 which lists these sources.
And, for bigger projects, you should know how to write makefiles. In a makefile, hsc acts similar to a c-compiler and it should be no real problem for you to integrate it.
An example for the use of hsc within a makefile is included with this distribution. (But, frankly speaking, I am far from being a pro with creating makefiles. If you are able to rewrite the included makefile so that it works with file patterns, I would appreciate if you mail it to me.)