I have to admit, when I clicked on thread I was expecting to see you were 65 or older, not a young 47! I am 45 and still think of myself as young, and I think you are young, too. Congrats on your 40 pound weight loss, that is amazing!
Anyway, you are never too old to get started on improving your fitness. At 44 (6 months ago) I started strength training with a personal trainer and made dramatic changes in my body composition, appearance, and well-being. I was a cardio junkie before, but never saw much of a difference until I hit the weights, and I absolutely think you should too.
I would definitely recommend getting some instruction, even if it's only 1 session. Have then write down the exercises for you, number of reps, sets, starting weight, etc. Focus on bodyweight/free weight exercises vs. machines - they are much more "natural" and also, a lot easier to do anywhere!
I'm sure others will chime in with some great advice but just wanted to say "hi" on my way out the door for some "slow movement" myself. Good luck to you!