add one point,

"Reading is the most fundamental thing to do in terms of improving English skills."

great summary of our English struggling , I just want to
add one point,
in order to enjoy the reading, one should find a subject
he/she really likes; otherwise, the reading could turn
to a very boring task; Anyway, you could always find
one or two articles from Newsweek, times, economist,
business week if you do not want to read a "sick" (thick )book.