How do I sort videos into folders - VLC primarily

Hi all,

I have just bought my first iOS device, iPad Mini 3 64gb, and I have moved some CBTs onto it using VLC.

Instead of ordering them into folders, which was how they were organised, they show up as one long list in VLC instead of being ordered into folders.

I am adding files using iTunes.

On Android and in Windows, I'm used to having access to the filesystem, but I don't seem to have that here, so how do I sort files into folders?