How to post an image
You have two options to choose from. The preferred option is to create an account with an online image hosting site such as photobucket or smugmug that allows you to create a link to the image you wish to display in your post.
Once you have set up such an account all you need to do is to copy the image location. On photobucket it will look like this

Clicking on IMG Code will automatically copy the link, which can now be pasted into your post. You can now post or preview your post and should be able to see the image.
The second and less preferred option (it costs bandwidth) is to include an attachment.
The attachment size is limited to 128kb. You may need to reduce the size of the image you wish to attach.
To attach an image click on “Additional Options”.

Browse to the image you wish to attach (remember the 128kb limit) and attach it. Click on post and you are done.