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I don't really understand what you mean by "basic files"

I think he meant placeholder graphics for enemies, weapons and such, just like there are for health items.

When I open Enemies settings, I don't see the basic template of the enemy shown in the tutorial, so I don't know how to proceed. This also happens in tiles or decorations.It's mean that I'm not ready for animated sprites.

After opening the Enemies setting, it is empty, different from the one shown in the tutorial.

There is no basic template. You have to provide a set of sprites according to manual.