Understand face to path first. If we get a + value this is a Left to right curve and - value is Right to left. Therefore easiest way to fix a slice is to control it. Focus on the clubface to be slightly closed at impact. To find out the best way for you feel free to contact me.
Working on clubhead speed is the single most important thing to help increase distance. From here we need to learn how to control spin (spinloft)
Spinloft is the value that determines how much spin a player can create.