Hello Ulysses ; nice to meet you, thanks for accepting my invite.
If you want to respond to someone that made a comment on your wall, just click on that persons picture and it will take you to their page. Then scroll down to their wall write something and then click submit. There is a lot of information and things to do here, like joining groups, discussion boards, making friends, quizzes plus so much more. If you have any questions just leave a comment on my wall or any of your friends walls and we will help you.