Critique Circle also has writer forums and tools. It’s the place where I learned about Indie publishing. It’s a great start for beginners in many ways. Especially the first step: Having someone else read your work.
The only caution is that you will come across a wide variety of people and not all of them know what they’re doing. Always view advice with some caution. The best way to really find out if the advice is right is if more than one person brings it to your attention. That’s the guideline I use.