Join Google Groups

Joining Google Groups may seem quite complicated but it's really quite easy.

Steps

Create a Google Account. Google accounts are completely free, and you don't have to enter any credit card info. If you already have one, then just sign in. You can also sign in with your Gmail, Youtube or Google Plus account.
Get yourself to the Google Groups home page. You can just type "Google Groups" into Google Search to get there.
Click on "Browse All..." to let you see all the group categories.
Choose your Region. After you press "Browse Group Categories" you should see lots of columns. Find your Region and click on it.
Choose your Country. After you have selected your Region, you should see lots of Choices.
Pick your Category, You can choose from a list of several available categories shown.
Continue to narrow down topics. You will eventually get to a listing of sub-groups. Click on the group name that appeals to you.
Open a Group and Click on "Join This Group" if it seems to appeal to you.
Pick a name that you want to be known as in this group. Then, press "Join Group" and wait to see if you get in.