Going through Fundamental One my left hand position was pretty good until I started on the chords lesson. Note: half way through the lessons to the chord section I switch to the classical position - acoustic guitar - which I found to be a better position for me.
Learning chords I noticed my wrist started to bend way too much. I reviewed Lisa's and Christopher's lessons on how to hold a guitar. I still needed more direction and visuals of good and bad positions from different angles. I found the following write-ups helpful. Hope other's find the info useful.
First, a write-up on posture.
And correct a bent wrist and better finger placement.
Best left hand position and technique
What is the best left hand position on guitar?