I've recently discovered Texmaker and prefer it vastly to TeXworks. But one thing that I liked about TeXworks is that I could click on my compiled pdf and it would zoom in closely enough to examine my text for small formatting errors. Is there a way to do this in Texmaker?
No, the internal PDF viewer in Texmaker does not, as far as I can see, have such a magnifying glass. You can use Ctrl + scroll, or Ctrl + +/Ctrl + - to zoom in/out, but that is as close as you get.
There is an open feature request for this: