With a month to go until my first ride and more or less the 'start' to my season, can someone help me with an EASY to understand training plan? One long (2 hr ?) ride per week? How many interval sessions? What else should I be doing?
Relax, if your only goal is to build endurance, you have no where to go but "up!" In fact, you'd have to "try" to goof up ongoing improvement.
The easiest plan is the simplest. Ride as much as you can. Ride as fast you can "once in a while." Take a day off when ever you feel tired.
If your goal is endurance, riding more miles is your plan.
Now, what you need to do is learn all those "other things" that are necessary to keep you, your bike, and your bike clothes and equipment ready for whatever the pavement and weather serves up. Rando riding, like ultra long distance riding requires knowledge in all phases of cycling.