To add the good advice above ......The High limit screw may have an 'H' next to it, and it is often the screw further out (away) from the frame. It controls how far out the front derailleur moves. It probably needs 1/4 turn clockwise (In) to "limit" the derailleur's movement. I usually make adjustments in 1/4 or 1/2 turns, nothing more. Makes it easier to undo if you go a bit too far.

The Low "L" limit screw controls how far the front derailleur can move at the small chainring.