Lots of Good Information Here
This is a good intro for someone without much knowledge about self-publishing. It covers a lot of ground, though, so you’ll need other resources if you want to dig deeper on any specific topic.
Also, keep in mind that this industry is changing every day, so some specific information might become outdated pretty quickly.
This is a great place to start your journey, but be sure to do your own research and keep yourself educated on the topics that are relevant to you.