If you only read 3 books
The three books I'd hand to anyone starting out.
These are the ones I keep recommending. Simple, practical, and they stick.

People & Connection
How to Win Friends & Influence People

Work & Creativity
Slow Productivity

Money & Finance
The Barefoot Investor
Beginner Roadmap
How I'd approach it.
If I were starting from scratch, this is the order I'd go in. Each phase builds on the last.
01
Build the Foundation
Who are you, really?
02
Sharpen Your Mind
Are you thinking, or just reacting?
03
Expand Your World
What does a good life actually look like?