/lit/ - Literature

For a proper introduction to Platonic metaphysics, philosophy and it's historical background that isn't butchered by academic caricatures:
>Eric D. Perl - Thinking Being
>Algis Uždavinys - Orpheus and the Roots of Platonism
>Kenneth Sylvan Guthrie - The Pythagorean Sourcebook and Library
>Lloyd P. Gerson - From Plato to Platonism

Middle Platonism:
>Stephen Gersh - Middle Platonism and Neoplatonism

Neoplatonism:
>Porphyry - Launching-Points to the Realm of Mind
>Llyod P. Gerson - Plotinus
>Gregory Shaw - Theurgy and the Soul
>Radek Chlup - Proclus
>Sara Rappe - Reading Neoplatonism

Christian Neoplatonism:
>Eric D. Perl - Theophany
>Eric D. Perl - Methexis
>Deirdre Carabine - The Unknown God
>Stephen Gersh - From Iamblichus to Eriugena
>Fran O'Rourke - Ps. Dionysius and the Metaphysics of Aquinas
>David Albertson - Mathematical Theologies
>Michael Allen - Ficino

Max Tegmark's Mathematical Universe is a great read too.

When reading Plato's Dialogues, a good practice would be to read them alongside Proclus' or Marsilio Ficino's commentaries.

Resources & notes:
If you can get the Loeb print of a text, opt for that. the Cooper transl. of Plato is fine.
Plotinus' Enneads + Commentary
>https://www.parmenides.com/publications/publications-plotinus.html
Proclus' Elements of Theology w/ Dodds’ commentary.
The Classics of Western Spirituality Series is good but with Ps. Dionysius, read the Rev. John Parker transl. instead:
>https://sacred-texts.com/chr/dio/index.htm
The only good print of Eriugena's Division of Nature:
>https://books.doaks.org/catalog/book/periphyseon
Wayne J. Hankey's publications:
>https://independent.academia.edu/WayneHankey
Gregory Shaw’s publications:
>https://stonehill.academia.edu/GregoryShaw
Intro to mathematical Platonism:
>https://critique-of-pure-interest.blogspot.com/2016/04/prelude-to-mathematical-neo-platonism_42.html?m=1
Ancient Commentaries on Aristotle
>https://en.wikipedia.org/wiki/Commentaria_in_Aristotelem_Graeca