After using this mouse for a while, I've found that using the second and third fingers from thumb for scrolling works best:
It is even easier to use them on the left hand too when necessary. Mouse settings will allow switching of buttons.
The mouse's shape makes those fingers easier to scroll up and down with and works much better for me.
If it won't scroll at all, left click the page surface to establish it and try again. A bit annoying at times...
Flicking both fingers up or down and leaving the surface will scroll in the direction further.
Only one finger will zoom in or out. Zoom in going toward the screen, out moving one finger away.
No touch screen or touch pad needed!