Hi Troy. Welcome to the world of IPSC/USPSA. Lodraw is right on - gear is easy for Production. No high dollar stuff is needed. You can also use your XD in the Limited 10 Division, but if it is a 9mm, it will still be scored as minor for scoring points.
A lot of clubs have a practice day/night during the week. If yours does, this is a good opportunity to get started before match day.
On match day, show up about an hour early and get with an RO. Ask for a new shooters briefing. This will get you informed on correct range procedures and some IPCS/USPSA safety rules BEFORE you make an uninformed mistake.
Read through the USPSA rule book (current 14th edition) on the USPSA web, or borrow a book form a fellow shooter if you have not received yours yet. It has the standard IPSC guidelines, plus the US variances to those rules.
Pay particular attention to Rule 2.4 on pg 36 and Sections 5, 8, and 10.3. These will get you will get you started in a safe manner. Don't worry about scoring, course design, and range equipment. Those will come as you continue to shoot in matches. The guidelines for the US Production division are on pg 92. All references are to the current 14th edition Rule Book (red one). There are new rules posted on the web site, but won't go into effect until new books have been sent out to the members.
If you want some good info and competition training techniques, I highly recommend Matt Burkett's video series. Matt Burkett
Don't rush yourself. Concentrate on procedures and accuracy. Speed will come with time and practice.
Happy Shooting :!: