We will have the sizing kit for club gear (club uniform) at orientation on Saturday. You will be able to try stuff on so you know what size to order. If you wear a bathingsuit under your clothes it will make the process much faster.
If you're not sure what to get focus on trying on the "Power Shorts" these are designed for both training and racing. The "Elite Pro Shorts" are designed with more compression and were built with an eye towards racing.
The sizing kit only includes "tri-shorts" not "bike shorts", more on that at the gear clinic :) but basically the "bike shorts" have a bigger pad for your butt and the "tri-shorts" have a smaller pad for your butt, both are to keep you comfy while you're on the bike.
For tops focus on the "Performance Top" which will have less compression than the "Elite Pro Top" (think corset vs spanx-sorry I need to think of another anology...)
Anyway it will all be there for NTPers ONLY to try on AFTER orientation. So wear your bathing suit, try it all on, see what you like, write the sizes down and order some stuff when the club order opens up in a few weeks (we'll let you know when).
Let me know if you have questions.