You'll need a site to upload to. I use photobucket myself. You go there and create an account. Then upload whatever photos you want following their basic instructions. (upload button- select file to upload- etc) Then they have a list of image codes you can pull from. Here on the arena we use this code without spaces [ img ] url [ /img ]. You can write it out by hand or hit the picture icon on your bar in post preview. The url of the image goes in between the tags. So:
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loginAnd the coding looks like this without spaces: [ IMG ]http://i831.photobucket.com/albums/zz240/sarahlacewing/image.jpg[ /IMG ]
Now here is a screen grab from my photobucket where I uploaded the above image. Once you have it uploaded you can select the code you need. I have labeled the areas in red.
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loginIf you already know the url of the photo you want to link you can just insert it. [ img ]The url of the picture I want to use[ /img ]
However, the arena doesn't allow hot links and are very careful about using photos without crediting/permission so do be cautions.