Is there a tutorial for adding lights on my own model?

[Staryi]

Is it really possible to do this in Blender?

[worm82075]

Probably not. Blender isn't good for much beyond skinning. My advice is to use Nifscope to copy and paste the needed nodes from an existing Bethesda mesh.

[LarannKiar]

Here's a tutorial on how to add AddonNodes to meshes in NifSkope and the Creation Kit. It's useful if you'd like to define your Light data in the editor.