There are a lot of different plans and programs out there, depending on what you want to do.

Wenzel Coaching has a good program - I can personally recommend Roger Rintala as a good endurance event coach. Carmichael Training does something similar. Velogirl Lorri does coaching at velogirls.com - not sure if she does a full on "plan" or just on the bike coaching. I'm starting to put training programs together for friends, just like the endurance training coaching I've been doing for TNT for years (I'm a USAC certified coach as well). There's a lot to choose from. Look around, ask questions, talk to people at local bike clubs if you have any about what they do.