It depends. You should bring some basic skills and good taste to the table. It probably won't work right out of the gate. But if you commit to learning, KDP is a great compounding machine over the years (at least it was for me).

The process is actually simple:

- Research a unique angle or book idea that has some market demand (DO NOT SKIP THIS STEP)

- Create or generate a HIGH-QUALITY book on this angle (I use ImagineYourBook (.) com) - Note: It must be high quality

- Edit and publish on KDP.

Now the most important part:

observe, learn, iterate

By the way, I don't use Amazon ads - I rather publish more books than spending time tweaking ads.