I will disagree with our Pilot Mentors on this one.
A PC flight sim like X-Plane is very good at teaching speed/time/rate/distance based on instruments. If you learn the basics in X-Plane, you will absolutely be ahead of your peers who did not learn to fly a PC flight sim.
It may not be great for visual pattern work, but if will help you solidify the concept of a 3:1 glideslope and calculating it in your head constantly. And once you have that down, you will find that it actually DOES help you with pattern work. Not to mention clearance limits and more advanced things you will encounter later.
X-Plane is every bit as good as any FTD you will fly in flight training. In fact, X-Plane drives our Precision Flight Controls PFC CRX FTDs.
It will help you with your instrument scan even before you know what an instrument scan is. Start your self-study and the PHAK/Instrument Handbook and X-Plane will become even more useful to you.
I highly recommend spending as much time as possible on a PC flight sim.