Lovelace resources

Where is the best place to find some detailed guidance on getting past the basics with Lovelace?
I have a pretty basic UI up and running have workied with some cards etc. but, need to get to the next level.
I don’t seem to have a lovelace yaml file, or can’t find it.
ANy help welcome.

If you want to use the ui-lovelace.yaml, you can activate it in the config.

But you can also add resources with the UI-Editor with the Raw config editor. (Three dots menu when in Edit mode)