If you are new to the field of Deep Neural Networks, you can easily be dragged into countless tools and applications without getting a firm grasp of fundamentals.
Here, I tried to start from the most basic concept in neural networks: a single neuron. I explain the basic structure and functionality of a neuron with interactive graphs and illustrations.
You can find the notebook at https://gitlab.com/faridkhaheshi/machineLearning/-/blob/master/deepLearning01.ipynb.