https://www.tensorflow.org/guide/migrate
Learn how to migrate your TensorFlow code from TensorFlow 1.x to TensorFlow 2.
migratetensorflowcore
https://www.tensorflow.org/guide/keras/making_new_layers_and_models_via_subclassing
Complete guide to writing `Layer` and `Model` objects from scratch.
tensorflow coremakingnewlayersmodels
https://www.tensorflow.org/tutorials
An open source machine learning library for research and production.
tensorflow coretutorials