The is a wonderful tool, but only when obtained legally. While it is tempting to download a free scan from a random forum, you will likely end up with a low-resolution file, missing audio instructions, and no legal right to use it in a classroom.

While the physical workbook is widely used, Hueber and other platforms offer digital support: Planetino 1, AB - Shop Hueber

To help with this, the book uses a clear set of pictograms, especially useful for understanding the instructions in German: