Complex sentence: I was a computer technician for many years and also volunteered for Christian missions and ministries here in the US and later went into countries like Nicaragua and Haiti to bring ministries there into the computer age.
Split into simpler sentences: I was a computer technician for many years and also volunteered for Christian missions and ministries. I used my technical know how to help ministries here in the US and later went into countries like Nicaragua and Haiti to bring ministries there into the computer age.