When people say "interval training" they generally mean stuff in the V02max range, and that's basically what Time Crunched Cyclist is all about.
Eff that ess. You can't build a year of riding around that stuff. It's like the frosting on the cake, but you haven't even starting grinding the flour yet.
Get in with the roadies. Slap some road slicks on your cross bike and get out there with the roadies. If you have any good group rides in your area, it will teach you A LOT about riding your bike. Skills, etiquette, how to push yourself to the brink of destruction to STAY ON THAT WHEEL. Sadly, Strava seems to have replaced Tuesday Worlds as the way people ride bikes together, and it's a damn shame.
In summary: (1) Get with the roadies, (2) Eff Chris Carmichael, (3) Eff Strava.