.OBJ file??? Not editable, or are?

I have just been downloading royalty free .obj and blender files, from different sites but cannot enter edit mode, or cannot apply textures or nodes. Is this normal, or is a lock the creator has put on them?? Not that anyone is reading or posting my threads…

Moved from “General Forums > Blender and CG Discussions” to “Support > Technical Support”

OBJ files do not have any locks on them. are you selecting the object before trying to go into edit mode?