As for English I would direct him to sbf
...Too bad there was no sbf at that time.
In my humble opinion, to improve one's proficiency in
any language (not just English),
listening to it is
much more important than reading it. :o
In my case, when I was a teenager during the 1990s, I was very interested in sports (not just football) news from around the world, so I used to listen to the BBC World Service's "Sports Roundup" on the radio:
bbc.co.uk/worldservice/programmes/sports_round.shtml
wikipedia.org/wiki/BBC_World_Service#Asia
at least twice a day nearly everyday during my teenage years, and I ended up listening to many other "BBC World Service" radio programmes (especially the hourly news) out of curiosity. :o
I also liked, and still like, to watch British and American movies (most of them from videotapes when I was a teenager), so that helped a lot too. :o
But unfortunately, watching our
locally-produced "Channel 5" TV shows or listening to any
Sinkie English radio station will probably
not help much, in my opinion. :o
If not for my interest in British&American movies and international sports when I was a teenager, my English nowadays would probably be quite lousy, simply because I'm a
Chinese Sinkie! :p
Even now, I still consider my English to be
inferior to the average American or Briton. :o