middle mouse key alternative

everything has been great with blender. just one problem at the moment i need sort of alternatives button for middle mouse (the mouse wheel) button for rotating, panning etc. everything that have anything to do with the mouse wheel click.

after quite a while using it, now it’s a bit broken and sometimes not responding on my click. much appreciated if someone can list everything that use middle mouse wheel button, that i need to change to completely replace the middle wheel click with something else. and alternative key suggestion would be nice too. (bit troubled with this one)