Below are resources you may find helpful in your journey as an author.
Book Marketing Made Easy: Strategies for Selling Your Nonfiction Book Onlin by D’vorah Lansky
Platform: Get Noticed in a Noisy World by Michael Hyatt
The Self Publishing Manual: How to Write, Print, and Sell Your Own Book by Dan Poynter
The Well-fed Self Publisher: How to Turn One Book Into a Full-Time Living by Peter Bowerman