Which IT job is most popular from now ?

hi all guys,
My name is Bảo, come from Viet Nam. In my hometown, I’ve worked as Assistant IT Manager for 5 years for many 5* hotel and i have got MCSA , MCSE from Microsoft but now i come to Canada to live with my whole family.
Thus, now, I need your advice related to which major at school i can learn and get job after learning. Please help me via email phanbao358@gmail.com.
Thank al;