Textbooks and related materials I’ve used recently on virology. I read all these several years ago (maybe 8?) but with the pandemic, I partially or in some cases wholly read them again:
Fields Virology (6th Edition). It’s dense but good. Standout bit is a thorough overview of how viruses are assembled.
Fundamentals of Molecular Virology (2nd Edition). Does what it says on the tin. A bit repetitive.
How Pathogenic Viruses Think: Making Sense of Virology by Lauren Sompayrac. A great semi-beginner’s overview if you know little about this area. I breezed through it in a few hours since I’d already read it a nearly a decade ago.
Principles and Practice of Clinical Virology (5th Edition). Aimed more at treatment in clinical settings. Don’t read this one until you’ve gone through the others as it requires a whole lot of basal understanding.
To read any of these and make sense of them, you’ll also need a pretty firm grounding in molecular biology, genetics, and general bio.