Hello Jennifer, nice to meet you, hope you had a great day, sorry that I could not comment yesterday the web site would not let me.
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 scroll down to their wall write something and then click submit and you just commentted on their wall
If you have any questions just leave a message on the page where you retrieve your messages from or their comment wall and we will help you, like hot to make friends, joining groups etc.
Please do not be afraid to ask
Welcome and thank you for being a friend