Can't reply further down too many nested replies...

You said - "What linux do you recommend me to try?"

If you just want to do general idea of linux and have an easy to use environment - Ubuntu
If you want to game on Linux - SteamOS

They both based on the same base OS, Debian, but both the above recommendation are more user friendly. Read some guides and ask for advice, if you have a new or unusual computer, you will need some not open source drivers, they won't be in there by standard sometimes.