To answer your question,
Your choices are to select one of the three icons in the quick reply box at the bottom of the page. You can select one of the following methods of adding a picture:
* Insert Link (Onedrive , or icloud, I think)
* Insert Image from URL (Photobucket, Facebook, etc.)
* Insert picture - album, garage or attachment (links back to pictures you have already uploaded to your own pictures folder on this site.
ROUSH 4 has a better handle on those things and will give you lots of advice if I am wrong. He is the Multimedia Moderator for the site.