There is a lot of useful information on the web that can be used to help you manage your call center. From online magazines to call center community sites you will be spoilt for choice.
Call Center Basics: Learn the basics of what a call center does
http://www.callcenterbasics.com
Call Center Journal : Journal for Call Center professionals. http://www.callcenterjournal.com/
Call Center Magazine: Online Magazine for call center managers.
http://www.callcentermagazine.com
Call Center Network Group: Contact center managers network.
http://www.ccng.com
Call Centre Managers Forum: Forum for call centre managers.
http://www.callcentres.com.au
Erlang – Erlang software.
http://www.erlang.com/
Professional Planning Forum: Planning for contact centers.
http://www.planningforum.co.uk
TelePlaza: Call center resources and information.
http://www.teleplaza.com