These books will come in handy for you on your journey as a UI/UX designer.

The Design of Everyday Things – Don Norman

Refactoring UI - Adam Wathan

Communicating Design – Dan M. Brown

About Face: The Essentials of Interaction Design - Alan Cooper

Designing with the Mind in Mind - by Jeff Johnson

The Elements of User Experience: User‑centered Design for Web - Jesse James Garrett

Don't Make Me Think - Steve Krug

Lean UX: Applying Lean Principles to Improve User Experience - Jeff Gothelf and Josh Seiden

Hooked: How to Build Habit-Forming Products - Nir Eyal

Smashing UX Design: Foundations for Designing Online User Experiences - James Chudley and Jesmond Allen

Sprint: How to Solve Big Problems and Test New Ideas in Just Five Days - Jake Knapp

Emotional Design - Don Norman

100 Things Every Designer Needs to Know About People - Susan Weinschenk

Well-Designed: How to Use Empathy to Create Products People Love - Jon Kolko