3D Menu - Any tutorials?

I’ve searched a lot but didn’t found any tutorials or examples of menu I need except 1 video but without any tutorial or explaination:

The main problem is all tutorials I’ve seen are for menus that on player’s HUD and controlled by mouse. I need menu that hanging in space and controlled by keys only (mouse using for camera). Is there any tutorials for this kind of menus?

Closest available that I know of is the 3D UMG documentation. https://docs.unrealengine.com/latest/INT/Engine/UMG/HowTo/Create3DWidgets/index.html

Aside from that, there’s not much else as it’s still in early stages. There may be more information if you search 3D UMG on the unrealengine.com site-wide search.

Digest in Japanese

Can you just use a mouse tutorial, but assign when (e.g. down key) is pressed, select the next option down? If you put everything in an array, then get the current selection, +1, set it?