PyTorch is a really powerful framework to build the machine learning models. Although some features is missing when compared with TensorFlow (For example, the early stop function, History to draw plot), its code style is more intuitive. Torchtext is a NLP package which is also made by pytorch team. It provide a way to read text, processing and iterate the texts. Google Colab is a Jupyter notebook environment host by Google, you can use free GPU and TPU to run your modal.