Any standard interactive PDF file will work seamlessly on your Microsoft Surface Go 1. Because the Surface Go 1 runs a full version of Windows 10, it treats PDF files exactly like a standard desktop computer does. When ordering digital planners from Etsy, you do not need a special "Surface-specific" file type. Simply look for listings that specify they are "Interactive PDFs," "Hyperlinked PDFs," or "Digital Planners for GoodNotes/Xodo."
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hth
Marcin