Use the sources mentioned above, respect the scanners who spend hours debinding and cleaning books, and always seed back if you use torrents.

Absolutely. Reading a low-quality PDF of Zagor is like listening to Mozart through a broken speaker. Reading an on a 12.9-inch iPad Pro or a high-resolution monitor reveals everything: the cross-hatching on Zagor’s buckskin jacket, the shadow in Chico’s eyes, the texture of the Darkwood Forest.