Hi Steve here's something I whipped up for another campaign to help another aeroscaler post pics
Click the image button on the bottom right
this will insert this piece of html into your post
I personally use Photobucket for my pic hosting and they have a direct heading to the immediate right of the pic click this and it should turn yellow and say copied temporarily this copies the link to clipboard on your PC. Then just highlight the text in between the two sets of square brackets and right click and hit paste and you're good to go.
if anything is unclear ask me and I'll see if I can clarify.