How to use normal maps in cycles?

How can I use maps, mainly normal maps, into the cycles render engine? I have seen “YouTube” videos for the normal maps, in where they create an “image texture” shader and then, they connect it to the “displacement” of the “material output”. But, that doesn’t generate the map perfectly and sometimes I can’t even see the map in the render scene. Are there any good tutorials that I may have missed or what am I doing wrong?

I apologize if I violated any rule because this is my first time on the forum and english is not my native language so, I apologize for that too.

Use a Normal Map node


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Important things to remember:

  • Select Non-Color Data on the image node
  • Choose Tangent Space with the correct UV map on the Normal Map node.
  • Plug the Normal into all your shaders and Fresnel* nodes (unless you specifically do not want to)

What do I do if I want to use a normal map but no UV map? so use generated co-ordinates or object co-ordinates?

What do I do if I want to use a normal map but no UV map? so use generated co-ordinates or object co-ordinates?

Please, do not.
Normal maps not working this way.