The 2023 World Plone Day presentation by @sneridagh is the best quick intro to getting a Plone theme-as-addon started.
It covers all the bases:
from starting your project, adding a new theme add-on, wiring up that add-on, and how to get going with adding your own customizations, even if those customizations are coming from additional add-ons.
Just thought I'd mention it here.
Now that I have more clarity, I'm re-watching the video on Plone/Volto Theming in 2024, this one is by @pnicolli, (also a good video).
In general, the first video in this thread should be watched first.
https://www.youtube.com/live/LkPOsIn1jYY?si=5k1NdppIbRcCCbYF&t=288
The early steps, mentioned in this video, seem to be different from what I picked up from the previous video, which I summarise as follows:
npm install -g yo @plone/generator-volto
yo @plone/volto my-volto-project # create your volto project
cd my-volto-project
yo @plone/volto:addon my-volto-theme
make install
# edit package.json and set theme to 'my-volto-theme'
Regardless, I was able to understand the mechanism being presented.
