Ever since Citrix made XenServer free, there have been a lot of new companies and administrators downloading, installing, trying and using the Citrix virtualization platform. And as more people use a product, more questions generally arise.
To help answer many of these questions, 360is has produced a XenServer administrators poster, in A4 format, for both new and experienced admins to download for free. Yes, registration is required to download. But come on, they aren't asking you for money! Wise up.
They've also updated the poster with a bit more "glitz". Check out the "midnight edition".