I have reposted lists of articles on free will, conversion, grace and natural law. These words have specific meanings in Catholic teaching. If you have not understood the recent discussions on line and in the msm on gradualism, these posts will help you.
Please take time to go through the lists of posts. I think over 800 posts mention grace and I have not listed all.
The Doctors of the Church series may be helpful as well for those who have not studied these teachings.