Is there a good tutorial on more complex material creation?

Some.of my materaild are looking nice these days as I start to understand how everything works…
UE4 gives you some water materials…looking in the material BP it looks much more complicated then mine…
is there a good tutoiral for learning how to make water like that and other complex materials?

Please and thank you.

The question itself is rather vague, the best way to learn more about the material editor is not only looking at the materials made by epic but also taking them apart, look at various nodes and understand what they do.

Here are some links on what the nodes can do:

If you know what you can do with particular nodes, you can start to be creative and play around with them to find a variety of results.

This is possibly exactly what I needed. In a couple different ways.
thank you sir.