Nice tutorial, but I'd like to add a warning:
If you want to send a Storable-serialized object to another machine via network, then you should use special network-safe method nstore. All other modules mentioned here serialize to text, which is not prone to byte-order and similar platform incompatibilities.
You'll also want to note that Storable is not platform-independent using nstore across a network with Dec Alpha (64-bit) - see http://www.bitmechanic.com/mail-archives/modperl/Jul1999/0749.html
If you are shipping blessed thingies across a network, also make sure that the classes that the thingies are blessed into are loaded (not just installed, but loaded into memory--"use"ed or "require"ed) on the receiving side. If not, the thawing process may fail.