Oh, embarrassment looms! I did deadlifts with 45kg, and squats with just one 12kg dumbbell(that was too easy, I want to try barbell squats next time), and lateral raises with weights so light I refuse to mention, especially because my left and right arm proved to be completely different in strength! And military presses with, I think, a mere, 20kg. All the walking has been good for my legs, but my feeble little upper body needs a lot if work!
Anyway, I haven't done anything with weights since I was in sixth form - so that's 35 years ago. And it was enjoyable.
I am planning to try the program by the guy on 'muscle for life' website. He wrote a book called Bigger, Leaner, Stronger for men (and another called Thinner, Leaner, Stronger for women, FGS!) and it looks effective. The program has you lift as heavy as you can, and increase the weight immediately as soon as you can lift it easily. So, I'm trying it. I'll let you know how it goes.