[Sticky] How can I make this forum better for you?
In the reply editor click on "Choose a files" just under the bottom left of where you are typing in text. A dialog window will pop up with a button at the top "Attach Files". Click on that and you will be able to choose the photo you want to post. Then after that photo has been added to your list of attached files be sure the box to the far right of it is checked and then click on the button at the top that says, "Insert Into Post"
You will then see that an attachment number has been inserted into the text editor.
To see what the picture will look like when you post it you can click on "Preview" at the very bottom left corner of the post editor. Beneath that button a preview of what your post will look like will appear. Then you can go ahead and post the results and the post should appear just as it did in the preview.