There’s a number of recommended resources out there on the topic of agnosticism, some individual episodes and some full programs that you can check out:

How to be agnostic — Philosopher’s Magazine — an ongoing publication, highly recommended

Am I an Atheist or an Agnostic? A Plea for Tolerance in the Face of New Dogmas by Bertrand Russell — classic text

Religious Ambiguity, Agnosticism, and Prudence by Randolph Feezell, Florida Philosophical Review

Faith for atheists and agnostics by Wallace A. Murphree — Sophia

Agnosticism, Skeptical Theism, and Moral Obligation by Stephen Maitzen

Agnosticism by Prof. Thomas H. Huxley

Religious Agnosticism by Gary Gutting, Midwest Studies In Philosophy

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