TL;DR: play as long as you can without help, until you get frustrated. At that point, the recommended region order helps a lot without spoiling anything but region names. If you can't find the next region, the world map (only showing region connections, no detail) will tell you what direction to look in.
Rain World is a masterpiece — equal parts metroidvania, movement puzzler, immersive rat in Manhattan sim — but its strangeness makes it hard to appreciate. Some things that turned players and reviewers off were fixed in [patches](https:/