Posting Pictures
I use a desktop PC and as a rule, I'm in nearly-full screen mode on whatever I'm viewing, so I right click on the ad's picture and select "Copy image," navigate back here and right click just below the verbiage of my post, then select "Paste."
If I'm posting pictures from my own files, I use the "Add Files" function below the "Add Photos Here" field.
We lived for a few years in a 1954 rental home that originally had the same Western Holly wall oven and cooktop as above, but in band-aid pink. The oven had been replaced, but the cooktop was still there, and it was delightfully heavy duty. That stainless cooktop is a beauty.