It is pretty easy to do.
When you get a picture in your computer and you want to post it in your reply,
click on the paperclip (attachment) you will then get a
screen that you upload the picture from your computer.
It is a good thing to learn if you are looking for
parts or have a particular problem you want us to help you figure out.
And as far as finding odd-ball obsolete stuff....I love the challenge and I am usually successful....keep in touch