Jay, if you go up to the menu bar, look for "Groups". Hover the mouse on the right side of the word 'Groups' then click on 'List all groups' in the drop down list. A list of groups will then appear, click on one that you are interested in and you will be taken to a new page with a button on it 'Join this Group'. Click on the button and your application to that group is submitted. Once approved, you will receive a notice of acceptance via a conversation (PM).