Immersive Reader is part of Microsoft's learning tools and is available to you BYOD for free.
In the video below I overview Immersive Reader. This has even helped myself with reading longer documents that I usually struggle with.
It's easy to use and feature rich. Microsoft already has some plans in the works to have this run in VR.
Struggle with reading or know someone who does? They really should check out Immersive Reader.