You can also read through some of the guides for Windchill. Below is a link to the Windchill 10.2 Basic Administration Guide:
http://support.ptc.com/WCMS/files/156797/en/WCBasicAdminGuide.pdf
Below is a link to all of the reference guides:
https://support.ptc.com/appserver/cs/doc/refdoc.jsp