For quick and easy posting, you'll want to download the diigo toolbar on your computer. This will automatically load a toolbar on your browser so that when you are on a great site, you simply click bookmark. Make sure you send it to your group: IB Biology Resources. You can add a quick description of what the site is or has to offer. It's simple and easy to do (heck...even I figured it out!).
My list of resources is depleting, so now it will be up to you to add new and interesting sites. You may certainly add relevant YouTube or Moodle videos as well.
Perhaps one day, you will have a question and you'll be able to access the answer quickly by checking out these bookmarks. Now wouldn't that be nice?!