I don't know what kind of musician you are, but here's a good way to learn barre chords if you're a songwriter!

When I wanted to learn barre chords, I wrote a song using a barred Gmajor Chord. I could have very easily gotten away with just using the standard Gmajor chord that everyone learns, but I thought that the barred chord had a better sound.

So to learn an Fmajor barred chord, simply keep on playing it. Don't stop until you've got it. Learn a song that uses it a lot, or write a song that relies on a bar chord. I don't know what kind of music you're into, but there are songs that mainly only use barre chords. The verse in"She's a Woman" by the beatles uses 3 barre chords and is a good way to practice bar chords!

Good luck!