I read about AI and specifically ML and DL, and I can’t understand the diffrences.
In DL : what are the neurons? does the meaning I need some computers for DL? What are the layers?
I read this article and still with this questions.
I understand the DL is a subset of ML, but what are the similarities? because as my understanding those two subsets are different….

So my question is what are the similarities and differences between the two, and when I need to use ML and / or DL?