Hi again, @Anna_McCarthy. I’ve given you some tips on the other post you asked this question on here: Zoom "steps" have suddenly become too big!
You user interface looks like you may have opened a file from a newer version of Blender in 2.70. This may have affected how your UI looks and it may be harder to troubleshoot for us that haven’t used 2.70 in half a decade.
I’d recommend trying Blender 2.82a and reading up on navigating in the manual.