You can post pictures by uploading them to a third-party server [a common favorite is Photobucket; any other recommendations are welcomed in the comments], and writing a post with the following code:
For example, <img src="http://absentminds.net/pictures/tw
After each meeting, I [or whoever else becomes secretary] will be posting the meeting minutes. Today we'll decide on a regular day & time, & soon we'll have a location ready. Stay tuned!