Making progress! You got photos shared and got its URL. Which is website page that contains picture itself, along with bunch of other things like titles and stuff.
To embed photos in posts here, follow the next step:
1. Go to that site
2. Paste URL to your photo's page into box
3. Click GENERATE CODE button
4. Copy the DIRECT LINK (URL) code
5. Put it in between [ resize ][ img ] < direct link URL goes here > [/ img ][ / resize] tags (no spaces) and you get following