Google+ is not really geared for using just with your current friends, its more about making new friends all over the world. (How do I do that?) Well, use the search way up there to search one of your interests. Say you like comics for example, put 'comics' in the search bar, Then click to bring up the options for your search. Select 'Everything' then 'People and Pages' You will then be presented with a list consisting of both people on Google+ who also share your 'comic' interest and pages that you might also like to include in a circle. Go to everyone's profile to 'suss that person out' and then include them or don't in a circle called 'Comics' then you will make new friends who are interested in the same things as you. Repeat for other interests you have.