Can I use .blend files to make a quake 3 level??? Is there a tutorial???
probably
but there isn’t a tutorial
you’d have to convert to some format [say, obj] and import that into the level editior to export in the proper format
and, it is highly unlikely you will be able to preserve textures or lighting in blender
you’re probably better off learning the quake tools
Tank you, I’ll try 
I don’t like to model on quake tools, for texturing and lighting it’s the same on blender or quake tools
bye bye 