You Need a map. This map you can use for the start menu. In your map make a sequence or just a camera that Show the map like you want.
In your menu, if you select your district, use “set view target with blend” with that you Change your camera. This Change can be a hard cut or a smooth Change to the new camera.
For the text to be appear you Need a simple text in your Scene. You can call from the Level blueprint to hide or Show the text.
But i think you should first have a look at this: