Centos server administration help

Looking for some ongoing help with linux server administration. I have a VPN server just for a learning experience. I have run into a couple of snags and want someone to help me get over the humps. Will pay for time, but in general, I need help for a few minutes here and there - one off small tasks. Currently have php and mysql and ispconfig installed but need some help with roundcube at the moment. There will be more. It's a five minute job to get me past my roundcube issue. I also want to set up coldfusion (Railo or Lucee actually) on the server. I'm using the ipsconfig control panel.