Tonight is my mom’s rosary. I know some people who are attending are non-Catholics and may never have attended a rosary. We pray the rosary aloud, led by a Deacon. Here is some background, if you are interested in understanding it. As with all things, no one is required to recite the prayers or do anything that is inconsistent with your beliefs. It is OK to simply sit quietly and meditate or pray in your own way.
http://www.catholic.org/clife/prayers/rosary.php
The point of coming together to pray is found in Matthew 18:20:
“For where two or three come together in my name, there am I with them.”