You could also try answering his question.
A lot of the combo stuff doesn't carry over into Brawl due to the hitstun/AD changes. You have chaingrabs and DACUS now, so use them.
You can airdodge out of hitstun very quickly, making combos in general difficult/impossible (why Melee players often hate on Brawl). Airdodges no longer change your momentum (just give you invincy frames), so you don't have wavedashing anymore. L-canceling is gone too.
Your down throw chaingrabs to fairly decent percent against most of the cast (and dair/DACUS can sometimes combo out of it, too). Abuse this against everyone since most noobs don't know how to avoid the grab. There's a thread for that, read up.
Phantasm is awesome in Brawl, learn to love it.
For stages, go for flat stuff like FD or Smashville (or Jungle Japes/Bridge of Eldin if the TO leaves them legal. I don't know what kind of TO you're dealing with).
Pikachu can chaingrab you for pretty massive damage. Dedede probably can, too(IDK how badly?). The noobs probably won't know this, but try not to get grabbed just in case. The competitives almost certainly will.
And of course, watch out for