I’m not a deacon, but I am an aspirant to become a deacon. The deacon’s ministry is broken down into three parts. Ministry of the Word, Ministry of the Liturgy, and Ministry of Charity and Justice.
The list of things that a deacon may do in each if these is quite long.
For the ministry of word, this might include teaching PSR, RCIA, proclaiming the Gospel, leadership roles in retreat’s, evangelizations and renewal programs, as well as many other items.
For liturgy, you see the deacon at mass at the Lords table in many different ways. But it may also be present when he witnesses a wedding, performs a baptism, etc.
For Charity, it is a lot of different things. You see the deacon at the hospitals visiting the sick (sometimes bringing communion, and sometimes just being with them), you see him in the jails and prisons possibly doing bible study, communion services, or one on one discussions about faith. You may see him delivering food to the poor or helping in a soup kitchen. The list goes on and on.
Many people just think of the deacon as the man who stands next to father on the alter and who may proclaim the Gospel, but he is much more than that. Part of his call is that of Diakonia, or service. Much of what a deacon does is not seen by many, but only by a few (or possibly none at all). He doesn’t become a deacon for recognition, but to be the servant to the Church as Jesus was.
I hope this helps you with some of the question. If you are interested in learning more, there is a PDF file that the USCCB puts out titled the National Directory for the Formation and Life of the Permanent Deacons in the United States located at
usccb.org/beliefs-and-teachings/vocations/diaconate/upload/DeaconDirectory.pdf
Peace,
John