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I don't know, I lasted like 6 months in a row learning from 0, then I didn't use it for a year, and I've been practicing with what I always post here for just over a year.
I started learning 4 months before version 2.0 came out

Oh wow XD

There's nodes in the shader editor (if you like working in one window) and in the shader tab, are they the ones you're looking for?

I don't know, they were materials that already had the whole node tree ready, so I went to the shading and modified the nodes to my liking. These would appear in the materials by default.