I have many books that I have used to learn more about both atheism and humanism. It will take me a while to list them all, but here is a start:

GOD - Evidence For or Against

Has Science Found God?

By Victor J. Stenger, © 2003 - Stenger examines the evidence for God, gods and the supernatural from a scientific standpoint and concludes that none of them exist.

GOD The Failed Hypothesis

By Victor J. Stenger, © 2007 - Building on his book Has Science Found God? Stenger examines various hypotheses for God and again concludes that science shows that God does not exist.

ATHEISM

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Author, Copyright & Brief Description

HUMANISM

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Author, Copyright & Brief Description

SECULARISM/SECULARIZATION

Beyond Doubt; The Secularization of Society

Isabella Kasselstrand, Phil Zuckerman & Ryan T. Cragun, © 2023; The authors discuss secularism, Secularization Theory and whether society is becoming more secular.

FREETHOUGHT/FREETHINKERS

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Author, Copyright & Brief Description

HOW THE MIND WORKS

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Author, Copyright & Brief Description

RELIGION

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Author, Copyright & Brief Description