How do I upload a photo......

If you click on Reply (rather than in 'Quick Reply') and hit 'Add Attachment', you can upload it there. It either is then as an attachment at the end of the post, or you can insert it into the post, it adds it a little small, but then when you click on it, it makes it the right size. Give it a try in here.

Leave this up as a reference for others I guess. I don't usually use the attachments bit, I just usually upload a picture to Photobucket and link it from there, but think I'm gonna start now, looks like we're good for storage on this site.

How do you mean, so that you can click on the picture to go to a different site?

If that's what you mean, I'm not sure you can, best off just pasting the link underneath the picture.

I noticed a few posts in the 'street artist' thread where I think you were trying to post a picture, the link used wasn't direct to the .jpeg (or whatever image type it would be). Is it because of that, that you're asking?

So, if you click on the link, it opens the image in a new window, it's that link you need to put in the image tags,
which is

[ img ]
followed by
[ / img ]
to close it (take out the spaces)
or you can copy it into the image box above the reply space.

You need to make sure it ends with the file type, so .jpeg or .gif or .png or whatever, those images you did have a resize code at the end of them. If you take that off, and copy them in, they'll work and the forum will automatically resize them. (Most images won't have them on, it's rare they do).

Let me know if you get stuck.