How to Navigate the Document in Adobe InDesign
See Adobe InDesign: Tips and Tricks for similar articles.
With many InDesign projects, it's necessary to zoom in and out repeatedly, as well as navigate through the pages. The Zoom Tool and Hand Tool can be used, but there are more efficient methods you can use.
- The Zoom Tool
lets you change the magnification of the document within the window. There are also commands in the View menu which have keyboard shortcuts. These shortcuts are great time-savers. 
- Zoom In:Ctrl+= (PC) / Command+= (Mac)
- Zoom Out:Ctrl+- (PC) / Command+- (Mac)
- Fit Page in Window:Ctrl+0 (PC) / Command+0 (Mac)
- Fit Spread in Window:Alt+Ctrl+0 (PC) / Option+Command+0 (Mac)
- Actual Size:Ctrl+1 (PC) / Command+1 (Mac)
is used to "push" the page around in the document window, or even go to a different page. It's an alternative to using the scroll bars.