hi everyone
i am about to do my welling mage. it is lvl 27 at the moment. first of all i need to know why one of the welling guides says to use healmastery on items until lvl 45 and at lvl 55 it switches to intelligence items .. i dont wanna buy too many items till i get to lvl 55 so i need to know if heal mastery makes sense or whether i should focus on intelligence directly.
the second queestion is a link to a guide on how to upgrade items.. i read that a few times now but i dont know how.. or is upgrading equal to transmutation or glyhing? cuz i dont wanna put my items into those boxes because most of the time i am not able to make it

thx for your help.
regards,
lukas