Current Perl documentation can be found at perldoc.perl.org.
Here is our local, out-dated (pre-5.6) version:
If you don't have a C compiler because for whatever reasons your vendor did not include one with your system, the best thing to do is grab a binary version of gcc from the net and use that to compile perl with. CPAN only has binaries for systems that are terribly hard to get free compilers for, not for Unix systems.
Your first stop should be http://www.perl.com/CPAN/ports to see what information is already available. A simple installation guide for MS-DOS is available at http://www.cs.ruu.nl/~piet/perl5dos.html , and similarly for Windows 3.1 at http://www.cs.ruu.nl/~piet/perlwin3.html .