You can change the font size, use a different style, and make the base font bolder. All those settings should be available if you access the "Aa" menu while in a book.
You can also adjust the brightness and 'warmth' of the lighting. Those setting sare available by swiping down (or tapping the elongated "v" near the top).
You can also adjust the brightness and 'warmth' of the lighting. Those setting sare available by swiping down (or tapping the elongated "v" near the top).
