Note: the dependency upon Math::Matrix is for the Hopfield module only. If you want to use Backprop you can safely leave it unresolved. If you want to perform a standard install, placing the modules etc in the perl standard library locations, run: perl Makefile.PL followed by: make install ++++++++++++++++++++++++++++++++++++++++++++++++++ alternatively, if you want a local install (i.e. placed somewhere in your home directory so only you have access to it, perhaps you don't have root access) copy from this location to somewhere handy: perl Makefile.PL PREFIX=~ make install and if necessary add that location to your PERL5LIB env variable (in ~/.profile): export PERL5LIB=$PERL5LIB:~/perl/lib/