Welcome, SacRider. Glad you are enjoying the new bike. You've come to the right place (50 + forum) for a lot of good cycling advice.

I'm just going to repeat what everyone else has said: listen to your body and gradually increase the length and intensity of your rides. I started riding one year ago, I followed this advice, and I recently completed my first "metric century" (i.e., a ride of 100 km or 63 miles).

Always keep your own goals in mind. For instance, my own goals in cycling are recreation and fitness, so I tend to just skim the posts in this subforum, and especially in the Road Cycling subforum, which are about racing.