To get started, open the UI Examples.sln file in the root and run one of the websites within the Examples folder.
The project will boot into an empty Umbraco site. Navigate to the backoffice and user the credentials in the appsettings.json to login.
You will see a new section for UI Examples which contains the work from the Our.Umbraco.UiExamples.v13 and Our.Umbraco.UiExamples.v15 in their respective sites.
Both projects will automatically compile and bring the assets into the example sites when building.
Quicker dev in v15 can be acheived by opening the Our.Umbraco.UiExamples.v15 in the command line/terminal and running the npm run dev command (make sure to either build or run npm ci first to install node dependencies).
If you receive errors about node commands during build, make sure that you have the correct version of node installed (22.12.0 at the time of writing). You can also try running the command that outputs directly in the command line/terminal to get a more verbose reason.