Option 11 - Hit the Mona Lisa icon.
2- Say hello to the img brackets (the spaces within are only there right now so we can view them for instruction purposes).
[ img ] [ /img]
3- Place the url of the image in between those. (Use a hosting site such as imgur if you are wanting to share an image not available on the internet)
[img ]http://www.example.com/bammudgera[/img]
4- Hit preview and check your work.

5- Post.
Option 21- Reconsider option 1.
2- Use the "Attach:" tool. I have never used it in my life and cannot speak on it nor troubleshoot. May god have mercy on you, young Slapper.