Does anyone know of any resources for learning the pictographic signs of Proto-Cuneiform?

Hi everyone. Brand new here, just thinking of trying to learn more about the language.

For some reason the part of the language’s history that is most appealing to me is Proto-Cuneiform. Even if it was, apparently, mostly just for economic and administrative documents.

Looking for any recommendations on how to learn to read these earliest signs. Right now I haven’t been able to find much with even so much as a sign list of the earliest logograms, so I would really welcome any recommendations. Digital or in print are fine. The more “beginner-friendly” the resource the better, but if that’s not possible then I’ll learn from whatever source I can.