More of Diigo - beginning steps to becoming a Diigo star!

Ok So here is the story so far. I have a diigo account and a del.icio.us account and I have started Oz Educators as a group on Diigo and we now have 31 members which is really exciting. So today after reading a huge thread of discussion about Diigo, I thought I would try to explore some of the more complex ie non-newb bits. So I found the tools section and put a 'save to diigo' tag on my blog and inserted the diigolet on my bookmarks toolbar so I can either use the main diigo toolbar or the shortcut.So far - all good!
Then I connected all my diigo bookmarks to my del.icio.us feed so they all go in there. That worked too! Then feeling very techy I also did a feed of my Diigo to the sidebar of my blog- nice,looks good, works well. The girl is happy.
Last thing the biggy - I imported all my delicious bookmarks across to Diigo. Took a while but finally I got the email saying job done- yippee. Ok, now I sound like the newb I am because I do find some of the terminology and the technicals about feeds and trackback etc a bit tricky, but if I can't do it how on earth am I ever going to teach it to others?
Anyway there I am happily clicking around my diigo page and my blog, looking at my new tag clouds - I added the delicious one too- and thinking 'wow this is really amazing - now all I need is another month of holidays to read all this stuff!'
Then I start playing with the diigo toolbar - nice ,easy, that makes sense and come across to the sidebar tab. Lordy lordy- I can see a whole lot more information- friends tweets and bookmarks and activities all in the one place. Fabulous- I am in information overload again.
So little MS nerd is happy and all the things I saw on the various screencasts and presentations listed in my previous post, make sense- thanks my PLN! But I do have one little question- how do I send out a notification to all members of my group ? Do I have to make a contact list of their addresses or is there a quick way? Some of them are not in my friends list yet so it might involve a long search. Any clues? Till my next diigo bulletin Bye.