Hi, my daughter has given me unlimited use of her desktop computer! I started walking with poles just over two years ago, in the French Alps, so up very steep tracks. I don't think I could manage most of my walks without them. Not only do they make it so much easier on my knees, hips and back, but they have saved my life on one or two occasions when I would have slid down a steep, slippy hill towards a sheer drop.
I use carbon fibre extendable poles from Decathlon. They are very light but strong and have wrist straps, which I need sometimes because I have to pull myself up some slopes by branches and clumps of grass.
I have lost about two stones since I started walking, and my upper arms are quite slim now.
I walk alone, and rarely meet anybody else as my area is so remote, but most walkers use poles here anyway. I don't walk in towns, but I can understand that you might feel a bit odd walking up the high street with poles!
Good looking with your walking - it is the best exercise there is - free, healthy, out in the fresh air.........
I walked for three hours yesterday in about 30C, here in New Zealand, but it was by a river and I always wear a hat with a peak. What you don't find here is the 'right to roam'', so you have to stick to marked walking paths - no trespassing. I am used to wandering all over the mountains in France, but I have to do as I am told here! Fortunately, there are lots of nature reserves which provide excellent walking.