The Classic Machinery Network

I’ve tried Imgur and the link below but I still get them to upload in my threads.
I’ve got them into the gallery but that’s about it.
Explain to me in simple terms please

Type your text, then go to your GALLERY, coose the pic you want and below it there should be a button marked INSERT. Click on it.
You will see a text address where the picture will be. Check it by clicking the PREVIW button. the picture should appear. When you're done = submit.