Question [Q] Please, about baseband/ firmware N7100UBALI9

Hi, excuse me. I dunno my region Note 2 came from, my Note 2 baseband/ firmware is N7100UBALI9 (the first page setup is Spanish language). Can i rooted any method on NOTE 2 forum ? And can i flash any custom ROM(such OMEGA,etc...) with properly? What's the different back-up NAND in CWM and back-up EFS?? Should i changing CSC everytime flashing custom ROMs? I'm apologize my english is not perfect. Please-please help my question coz I'm noob beginner. Thank you very much,appreciate.