Welcome aboard Keely.    What you want to do is on the top of your screen go to groups.... find the group you are interested in - they are broken into several categories and then when you select one on the left side it will say "join group".   

You also add associates when reading another's bio by clicking the button above the agents photos and subscribe to blogs when reading someones you like in the same manner

The blog subscription well put on your main dashboard a list of people you subscribe too and anytime they write something new you'll know because they will route in the list.

Let me know if you have any other questions............. have fun!