UX and product design require constant learning.
Below are some resources to get you started (and keep you going).
The basics - start here
100 Things Every Designer Needs to Know About People by Susan Weinschenk
Just Enough Research by Erica Hall
The Elements of Content Strategy by Erin Kissane
Interviewing Users by Steve Portigal
Practical Empathy by Indi Young
100 More Things Every Designer Needs to Know About People by Susan Weinschenk
The Design of Everyday Things by Don Norman
Hooked: How to Build Habit-Forming Products by Nir Eyal
Don't Make Me Think by Steve Krug
Sin & Syntax: How to Craft Wicked Good Prose by Constance Hale
Microcopy: The Complete Guide by Kinneret Yifrah
Practical UI by Aham Dannaway
About Face by Alan Cooper
Outside the screen - extended reading in related fields
Understanding Industrial Design by Simon King
Designing for Emerging Technologies by Jonathan Follett
Styled: Secrets for Arranging Rooms, from Tabletops to Bookshelves by Emily Henderson
Happy City: Transforming Our Lives Through Urban Design by Charles Montgomery
Envisioning Information by Edward R. Tufte
Design of the 20th Century by Charlotte & Peter Fiell
Everyday Bias by Howard J. Ross
Pattern Pulse Vol 2 by Rachel King
Blogs and websites
Shortcut (Figma’s blog)
User Interface Engineering (Jared Spool's site)
Design management and leadership
LiftOff! Practical Design Leadership to Elevate your Team, Your Organization, and You by Chris Avore and Russ Unger
Articulating Design Decisions by Tom Greever
Resilient Management by Lara Hogan
Functional area-specific resources
Research
Communicating Research Findings (UX Matters)
A More Actionable UX Research Readout — Inform Design & Build Empathy (The Startup)
UX writing and content strategy
Visual and motion design
Tutorials and courses
LearnUX.io (tool tutorials and courses)
Superhi (code, visual design, UI design, and project management courses)
Boise State UX Research Certificate - this is more intense and consists of several courses, but gives a solid foundation in UX research and design thinking methodologies