USA Cycling: Our country's governing body for cycling. Go to www.usacycling.org to find out how to obtain a racing license, view the rules and regulations for bike racing, see a list of sanctioned races in your area, sign up for National Championships, find out how to attend a developmental camp or how the US National team selection is made.
PA Cycling: Our regional USAC association that helps organize track, road, and cyclocross seasons in Pennsylvania, maintains a listing of races and training series held in the state, and recognizes outstanding clubs and riders. http://www.pacycling.org/
BikeReg.com: Currently, about 90% of the bike races (at least in the Mid-Atlantic and Northeastern regions of the US are listed on www.bikereg.com. You can see what races, rides and camps are coming up in your area as well as who else is registered and you can register on-line to avoid paying any late fees.
Bike Racing for Juniors: The authoritative book on Junior Cycling by coaches Kristin Dieffenbach and Steve McCauley. http://velopress.com/books/bike-racing-for-juniors/
Junior Coaching: Young Medalists High Performance provides coaching for the YM Team.
Adult Coaching: If you are not a junior (or not a junior anymore) but you are interested in coaching from the same people that run YMHP, check out Backbone Performance at www.backboneperformance.com or email Colin at email@example.com