You might want to write to jkeenan1, who is leading an effort to mentor people on taking over maintenance of modules. See Phalanx Phoenix: Mentored Maintenance of CPAN Modules. While that is a face-to-face effort, primarily, there is also a mailing list and Jim has given some talks on this topic at YAPC and other places that he might be able to share with you.
If you're new to CPAN modules entirely, I suggest reading some of the Tutorials as a good starting point (e.g. How to make a CPAN Module Distribution). Sam Tregar's book Writing Perl Modules for CPAN is another good starting point.
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