Most menu items have a keyboard shortcut you can find out by looking at the right part of the respective item. For your convenience, there are some additional shortcuts that do not show up in the menu. Here's a list of them:

Table 3.1. Additional keyboard shortcuts

Action to performKeyboard shortcutsInternal command
Go to first page Home goFirst
Go a few pages backwards, skipping some Alt-Page up goPreviousFew
Go to previous page Page down goPrevious
Go to next page Space, Page down goNext
Go a few pages forward, skipping some Alt-Page down goNextFew
Go to last page End goLast
Scroll the current page (when using ViewActual size) Cursor down, Cursor left, Cursor right, Cursor up scrollDown, scrollLeft, scrollRight, scrollUp