Elaboration on one subjek that I like

My favorite lesson are Investment management and taxation.
Previously, at the moment that still at school, I more like with lesson about theory than numeral.
But I don't know why since University Lecture I more like lesson to need intelligent brain.
I like Investment Management at the first because very interest and to easy for understand me.
from that, I conscious if investment management is not difficult. I also enjoy to study that lesson.
Why I like lesson taxation, because from my sister experience, skill about taxation very necessary in the work world.
My sister say, If we have science taxation, then easy for get to job. After I study taxation, that lesson enough for make me to get knowledge about taxation.