Adding spoilers:
[spoiler=shop]Hi this is my shop[/spoiler]
After "spoiler=" add the text you want as your spoiler's title. Then finally add whatever content you want between the tags.
The above example will look like this:
Uploading pictures:
Take screenshots of your tori using F7 or F8. Go to an image hosting site such as
http://imgur.com and upload the screenshot from "screenshots" folder in your toribash folder.
After uploading, copy the "direct link" of the picture. It usually has the extension in the end of it's link such as ".png" and ".jpg".
With the direct link copied, paste it between [img][/img] tags and hopefully the picture will appear in the actual post. Do it for all the pictures you want to add to your shop thread.