So, what are the different Nike models (men) ?

As I recently became a Nike fan, I only know the Roshe's so far as models. I've seen pics of Air and Zoom, but both of those look the same to me. In addition, all of these have Flyknit models which also look different. And last but not the least, there seem to be RN models and 4.0 and 5.0 models.

I am just very confused. Can someone distinguish between the different models and provide some basic info? Apart from the Roshes, everything else seem all over the place to me. Thank you and appreciated.