[Question] Immigration.

Hi, my name's Dante, i'd like to ask how someone, like me, a 19 years old guy from Argentina, can immigrate to England, i have so many questions and i'd very pleased if someone could help me about the things that i have to do to and i surely don't know, For example: Do i have to get a job online before moving? Does a Italian-Citizenship worths if i'm moving to England? (i can get it due my Grandmother) Is there any work&travel opportunities? Can i study there, or just work? An Argentinian Licenciature in Psychologic with English Orientiation worths there? Thanks so much in advance.