OK, I'm going to do my best to explain how to add a friend... and then hopefully someone will come along and do a better job of explaining. LOL!
When you want to friend someone, you can go to their user info page. Here is a link to mine: User info page! Once you are there, you will see a rectangle along the top with a bunch of little squares in it. The first square is a picture of a person's head and a little plus symbol... Click on that! It will take you to another page with some options you don't have to worry about for now, just click add at the bottom and you are done!
Now you will be able to see whatever your new friend posts on your Friend's List or F-list as we often call it. It is a much easier way to follow the people you are interested in.
I've added you as a friend, so if you look at your user info page you should see me there.
I hope this helps... I'm afraid I didn't do the best job explaining, so please feel free to ask any questions. Good luck!