Here are a few resources for reading the commentaries of the Fathers of the Church.
Has the Nicene Post Nicene Fathers other known as the NPNF. You can get this in book form also.
This website has similar information.
A series of commentaries called the Ancient Christian Commentaries. These are good to read.
Here is a link to many homilies of St. John Chrysostom.
There is of course the standard commentary from the Blessed Theophylact on the Gospels - You can find Theophylact's commentaries here along with other commentaries.