After launching qpdfview to open a pdf file use file -> open from the menu or press control +o as the keyboard shortcut. If you have a pdf open and use file -> open in new tab from the menu, press the open in new tab button on the bar or press control +t. To refresh a pdf such as if you are using something to write a pdf and want to see what changed you can press the refresh button or press f5 just like most web browsers. If you want select a particular page of a pdf there is a box that says for example page 1/3 to switch to the third page you can type in the box and select page 3/3. To move to the previous page use the button that the arrow to the left. To move to the next page use the button that is an arrow pointing to the right. To change the view of the pdf to get closer there are a percentage of zoom as well as page width and page size. To see the full page of a pdf select page size and to select something where it shows.
