To get started with JBrowse Web, we recommend using the jbrowse CLI tools. You can also use the jbrowse CLI for things like adding tracks too.
Alternatively, manually download this release as a zip file from GitHub here:
We also have our embedded components, such as @jbrowse/react-linear-genome-view, which is the React component for the linear genome browser view (no circular, dotplot, etc).
See https://www.npmjs.com/package/@jbrowse/react-linear-genome-view for instructions on downloading this with npm or yarn.