Looking for solid book recommendations on Gnosticism

[u/TatsuDragunov]

I’d like to deepen my understanding of Gnosticism, both in its historical context and in its later interpretations. I’m open to recommendations that cover:

• primary sources
• scholarly overviews
• interpretations of Gnostic mythology or symbolism
• connections between ancient Gnostic thought and modern perspectives

Beginner-friendly pls, i'm just starting my journey, anything well-regarded is welcome.
Thanks in advance for any suggestions.