I think no tutorial for it. It only you uself must:
1. remove apache
2. install nginx
3. write NGINX config for you sites domains. - only uself (for it many TUT how to made NGINX config)
try to use it script - http://www.btcentral.org.uk/projects/centmin/ not shure if it work for...
I just bought license yesterday.
I want to e-mail subscribe about new XF releases ( xenforo versions).
But subscribe not about ALL XenForo news. But only info about new xenforo releases. Is it possible ?