My preferred way: Build stuff with the new technology, consult the docs or the source code of the technology as the need arises.

Yes, thank you Rob.

Good to hear its on the radar! However, regarding the reload time, it is caused not so much by Aurelia itself, but by the dependencies that need to be loaded, connections that need to be established and data that needs to be loaded by the app. Caching the data in local storage could help the load times, but it's not something that I would like to implement during the first phases of programming an app, hence live reload would greatly help with things like fine-tuning the app's interface.