I really wanna learn how to use linux and master it. I wanna begin with CentOS.
Is it just OK?
the problem is..
I don't know what and how to start.. :'(
Share your knowledge! haha
If you want an operating system that you can start using right away and just play around with in your spare time I suggest Ubuntu. But if you have enough time and you're serious about wanting to master Linux, then maybe you should look into arch linux. Arch has a really steep learning curve and might not do everything you want in an OS right after install, but it has a great community of people who can help you and an amazing wiki.