To open a pdf file use File -> Open from the menu or Ctrl + O on the keyboard. If you have a pdf open use File -> Open in new tab from the menu, click the Open in new tab button or press Ctrl + T. To refresh a pdf click the Refresh button or press F5 just like most web browsers.
If you want to view a particular page select the box (e.g. page 1/3) and tpye the page number (e.g. page 3/3). To move to the previous and next page use the left and right arrow buttons respectively. There are numerous zoom option, including percentage, page width, page size, continous, and multiple pages.
qpdfview also includes some very useful docks. To view the outline dock, in the menu select View -> Docks -> O utline (make sure the button is checked) or press F6 on the keyboard. It should appear on the left hand side of the pdf with collapsable sections. This is useful in navigating large pdfs.
