How to you link a picture to a thread?

How do you add a picture to a thread? I understands it's gotta be hosted, but once I have the URL Thingy, what then?

You can paste the link in the text box, highlight the link then click the Img button this will then add img in box brackets around your link. You could always upload the image from your local computer by clicking the upload attachments, then selecting the folder location on your local PC, just download the image from the net first

Let me know if you need anything further