Where can I find articles, descriptions, etc that describe the use and advantage of HRMs? I've contemplated them for a bit, but don't really understand the usage and what I would really get out of it as a weekend warrior.

Where can I find articles, descriptions, etc that describe the use and advantage of HRMs? I've contemplated them for a bit, but don't really understand the usage and what I would really get out of it as a weekend warrior.
this is a pretty good book on it:
http://www.amazon.com/exec/obidos/tg/detail/-/B0000U0ZIC/qid=1092248189/sr=8-2/ref=pd_ka_2/103-4506800-3782209?v=glance&s=sporting-goods&n=507846

www.cptips.com. Scroll down to the HRM section.