There are many ways to get involved with your parish, and doing so is a way of living ou the "S" in ACTS which stands for Service. Below are just a few ways that you might consider getting involved:
Lector
Minister of Communion
Greeter/Usher
Church cleaning
Church landscaping
Parish Council
Teaching CCE
Jamaica Committee
You might also choose to contact your parish Priest directly and ask him where your parish has the greatest need for help.