Congratulations on your return to active LD practice, KonchogTashi, and welcome to the DILD class! Dream recall and lucid dreaming are such rewarding activities, I think nobody who really experiences them can ever stay away for long!
And let me just note that I, too, am among the "mature" crowd here on DreamViews, also middle-aged.
You are in a great position, because you *know* you can lucid dream. So getting back into it will be a snap for you, I'm sure.
Your regular sleep schedule is a major advantage. (It is one of my major weaknesses -- my to-bed and out-of-bed times are all over the map). Those times where I've been rigorous about sleep schedule have seen big boosts in LD frequency, so you're already standing in good stead in this regard.
Your steady recall is also a very good sign. The more we feel "close" to our dreams, the closer we are to lucidity. Something we can investigate is how to boost your recall even higher. I'm a big fan of the notion that there is no such thing as "enough" dream recall, and that the practice of lucid dreaming involves always pushing our boundaries and abilities to higher states. We can start with looking at the process of how you do your recall. When you wake up (that moment where you find yourself awake), what do you do? How much time do you spend reaching for dream memories? Do you take any physical notes? Do you ever notice middle-of-the-night wakings at all?
As for lucid dream length, I'm sure fogelbise and I can help you with that as well. fogelbise noted that the "dream end" feeling need not actually mark the end of your actual dream. This has really hit home with me this year as I experienced many false awakenings (FAs) and other lucid dream -> non-lucid dream transitions that felt very much like a "wake up" dream ending feeling. When you think you may have awoken from a lucid dream, if you remain still and maintain a drowsy/sleepy mindset, lightly considering the dream you just had, you can fall asleep again quickly and re-enter the same dream (or start a new one).
What I've found very effective is maintaining a list of mental mini-goals of things I want to do in the dream. A "mini-goal" can be something as simple as: trying a RC you've never tried before, exploring what's in the next room or around a corner or behind a door, or a task from the task-of-the-month thread (link below). Maintaining these minigoals keeps you engaged and prevents you from "giving up" on the dream, it really helps in lengthening the experience. Also, really *enjoy* the dream, look around and wonder at it. Don't think about "I have to hurry, the dream will end soon!". Sensei (a talented LDer here on the DV forums) found that as soon as he stopped thinking or worrying about dreams ending, paradoxically, all his LDs started to last longer and longer! Length is also something that comes with experience.
Participating in the "task of the month" every month is a great way to always have a set of goals on hand, and getting those nice wings next to your avatar that last for the month is a helpful motivation! Here's this month's thread:
http://www.dreamviews.com/tasks-mont...er-2014-a.html
In terms of navigating the forums, be sure to use the "Forum / What's New" menu to find new posts, and to see activity on threads you've subscribed to.
One other thing I found incredibly helpful was to rehearse the moment of becoming lucid while awake, and make up a short ritual that you always follow. Do something like: your favorite quick RC (e.g., nose pinch), rub your hands and count to 5, quickly pat down your chest and legs with your hands, then think about what your latest goals are. The first time I did this in a LD resulted in my longest and most vivid LD that I had had at the time. It was within a week or two of when I started doing those little rehearsals so it didn't take long.
Well that's a lot to take in right now so please write back if anything doesn't seem clear. Again, welcome, and I'm sure you'll be LDing in no time!