welcome to cycling...i love it, too! what kind of race do you think you may be training for? honestly, road racing is pretty tough so a crit or a road race may not be the best place to start if you're still new to cycling. maybe start with a time trial (TT). then it's just you against the clock and you won't have to mess with racing tactics. if that sounds good to you there are a few things I can think of...the shorter the race, the longer the warmup. if you are doing a 10 mile TT, you should warm up for roughly one hour, for example. training for a road race is pretty specific, but there are probably some good training plans out there once you find out what you like.
a century would be a great goal. very similar to a marathon. a lot of the centuries will offer shorter distances so you can do a few of the shorter distances before you take the plunge & do a full 100. you may want to check on Bicycling magazine to see if they have some links. also, try looking up Chris Carmichael as well.
hope this helps! i love hearing that there are other cycling enthusiasts here!