There are two ways to do this, choose which ever works better for you.
The first is to use this feature found below the submit button:
Click the browse button and select whichever file you desire and then you can add a comment if you want, it'll show above the picture. Then make sure to hit add file and then you can add another if you want as well.
The second way is to use the "Img" feature along the menu bar above the text box.
Once you click on it, " img /img" will show up (except in brackets.) Put the link that leads directly to the picture between the brackets.
Happy uploading
