I'm having trouble following the lesson for just dance for lady gaga. The melody and some of the cords aren't don't sound right. I'm having trouble with the B and Fm cords too.
just dance
# 1
You don't mention your skill level, but it looks like you just joined, so maybe beginner? If so, F#m and B are definitely not beginner chords by any means. It will take you awhile to learn them -- probably a long while. Lisa teaches them in fundamentals 1.
If you're not a beginner, then if you add a bit more about what you're having trouble with, someone can probably help.
"I got this guitar and I learned how to make it talk."
# 2