SHARE is user group / association for people working with IBM mainframe type products. http://www.share.org/about http://www.share.org/about I taught CFEngine

SHARE is user group / association for people working with IBM mainframe type products. http://www.share.org/about http://www.share.org/about I taught CFEngine at one of their conferences (for managing Linux running on z/OS) and got exposed to more mainframe-y stuff than I ever had before in my career as a UNIX/Linux sysadmin. What are you looking to do in the mainframe world? You can also go to https://www-03.ibm.com/systems/z/ https://www-03.ibm.com/systems/z/ and then ask for a quote and talk to a sales rep to price one out, you'll see what's involved and capabilities.