I found the best way, (for me at least), is folding it like you would when putting it on a table. This way you can easily turn pages with one hand, using your thumb. (By swiping) And it feels comfortable to hold.
https://1drv.ms/i/s!AhQcU_5rKOSsj4Itla0IGYFw9ah3hA
https://1drv.ms/i/s!AhQcU_5rKOSsj4IsduiFyolgezjOEg