On my kindle photos are in downloads where I save them from either an email or message. When you make a post look at the attachments bit, you can them select where your photo is ( camera or document) and attach it. If you preview your post the photo doesn't show up, but it will appear when you post it.
A4A will show as a mobile site on your phone, scroll down to "full site" and select to get on the 'normal' one.