Changing Centre of 3D Viewport I'm sorry if this is a stupid question; I am very new to the program.

All the basic movement controls (Orbiting, zooming, strafing) seem to be based around the centre of the viewport. I am trying to work with something fairly far away from this point, and it is very difficult to control. All movement is very sensitive (do you know what I mean?). Is there any way to change this point? Or is there any other way to circumvent this problem? Sorry again if the answer is something obvious.
Select an object by LMB over it and then press numpad period to focus on it.

But if you want to focus on an emtpy space and pivot around it, LMB to move the 3D cursor to that spot then  Alt home