Some default keyboard shortcuts:
Navigation Functionality:
CTRL+l = Focus location text field.
CTRL+f = Focus finder text field.

Reading Granularity:
Up/Down arrows = read next/previous element.
Left/Right arrows = read next/previous word.
SHIFT+left/right arrows = read next/previous character.

Skipping functionality:
TAB - skip to next focusable element.
CTRL+h = skip to next heading.
CTRL+i = skip to next input element.
CTRL+r = move to next row in table.
CTRL+d = move to next column  in table.