Criteria for deciding number of layers in training model?

Course Q&A Machine Learning Specialization Advanced Learning Algorithms
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In addition to @AbdElRhaman_Fakhry 's thread suggestion, I would also like to add that there are several options:

  1. You can get started with a known model which has been created by some researchers, and this model proposes already a certain amount of layers, and nodes inside of each layer.
  2. You can start from scratch.
    2.1 Assuming you are a very experienced ML designer, may be you’ll get started with a configuration that, from experience, it is the best layout for the task at hand.
    2.2 Assuming you are a novice, you may start with your best guess. For instance, 2 hidden layers, each with 4 nodes.

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