There are lots of ways of changing the view listed in the FAQ page at Getting Started Support. I found the arrow keys on the keyboard to do the trick, try one up and one to the right - hope this helps!
Right-click on the viewport and select viewport settings where you can change the projection method from parallel to perspective. You can reach the perspective settings by clicking the button 'settings' on this window. A much easier way to contol the perspective by view is to select view/ dynamic... .