Blender's UI has improved greatly over the years. There is a lot to it, but that's because you can do so much in it. The good news is you don't have to learn it all if you're just looking for a UV editor. If you're looking for tutorials, I like blender guru because he doesn't speed through his tutorials and explains why you do something rather than just saying do it. But there are a ton of good tutorials out there. And there is a blender forum here that has some knowledgeable people here who are happy to help if you have questions.

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