David Kimura PRO said almost 2 years ago on Deeper Dive into StimulusJS :
  One thing that has changed from the earlier videos is that now I use rails webpacker:install:stimulus to install stimulus. I think that #189 or #207 are great starting guides. I think that it's one of those things where it will take practice to get use to it. I often refer back to the handbook which has lots of great information. https://stimulusjs.org/handbook/introduction