If you have been using Linux for more than half a year, then you must have some basic Linux skills, or if you want to try a purebred Linux version, I recommend two versions for you.
One is Debian and the other is Linux from Scratch.
Why should I recommend Debian? Suggest you go to http://www.debian.org/first understand, the Red United Linux Forum also has the Debian area, its tools are from the GNU project, so called Debian Gnu/linux, it will let you know more about the culture of Linux.
Linux from scratch is more powerful, everything needs to be configured, the Linux version has a word, without Linux from the scratch from the Linux, it is worth mentioning that the use of Linux from scratch is a shortcut to the master.
If you want to try more Linux versions, consider Debian and Linux from Scratch.
More wonderful Linux video tutorials at 51CTO Academy: http://edu.51cto.com/course/courseList/id-48.html
There are two versions of the Linux usage base that you have to try