finger position for Fmaj7?

Index finger barres the first fret , A string fingered by the pinky, ring finger on D string , middle finger on G string.

The object of learning guitar has always been to end up with your middle finger touching a G string.

Rock out with your sock out.

Alot of times you see it played just like a regular F Chord. But you don't play the bottom string, and you play first fret of top string with thumb.

I usually play this one. It's easy and 4 notes are enough for a guitar chord.

^Me too. Regarding the other chord at the top of the thread, which looks like a Bbsus4 to me, try using your index finger on the first string and muting the fifth and sixth strings, or, if you want a more "power-chord" kinda tone, play it as a barre chord but don't worry about getting the first string clean.