On Thursday, February 23, 2012 03:58:10 PM Wuxi Ixuw wrote: > Ok, > I've made up my mind to dive and learn ... so to learn the right way > like what professional do ... what shall I do? First, try not to top post. Second, download the CentOS 6.2 installation media and install it on your own hardware, reading through the excellent upstream documentation (linked from the www.centos.org website). Read through the CentOS wiki HOWTOs and such. And play around with your system, feeling free to reinstall it (or re-clone it, for a VM) at any time. Live with it to learn it, really. HowtoForge has some nice articles on setting up servers to do various things; read through a few that use CentOS 6 as the base, and attempt to implement on you testing CentOS server. Then attempt on your VPS. Expect to spend quite a bit of time on the process; Rome wasn't built in a day, and neither is admin experience.