All of the documentation for perltidy can be found at 
http://perltidy.sourceforge.net

The man page is in pod format appended to the script bin/perltidy.

The man page for use of the module Perl::Tidy.pm is appended to that file.

tutorial.pod - is a short tutorial
testfile.pl  - the test file referenced by tutorial.pod

stylekey.pod - is a document to help find parameters for a given style

perltidy.1   - is a man page for installations which do not use Makefile.PL