Being fit for your golf clubs is one of the most important things you can do to help improve your game. Technology has come so far that we are now able to find the proper loft, lie, length, grip size, shaft, and head design in order for you to maximize the centenderness of the shot and give you the best playability. I use the TrackMan 4 and all the data points to accomplish the fitting process.
To answer this question best I use a formula, PGA Instruction + Club Performance Upgrades = Game Improvement
These two components work together, get fit soon so that wrong clubs will not have a bad influence on the swing, create bad habits and also frustrate you with your lesson experience.