Mac equivalents to Windows Home and End are Cmd-ArrowUp and Cmd-ArrowDown. Fn-Left and Fn-Right are Mac-flavored Home/End, which don't move the text cursor, but scroll the text container, keeping cursor in its original place (although there's no distinction when viewing documents, e.g. in a web browser).
Fn-Left = scroll to top
Fn-Right = scroll to bottom
Fn-Up = scroll page up
Fn-Down = scroll page down
⌘-Up = cursor to top
⌘-Down = cursor to bottom
⌘-Left = cursor to start of line
⌘-Right = cursor to end of line
Mac equivalents to Windows Home and End are Cmd-ArrowUp and Cmd-ArrowDown. Fn-Left and Fn-Right are Mac-flavored Home/End, which don't move the text cursor, but scroll the text container, keeping cursor in its original place (although there's no distinction when viewing documents, e.g. in a web browser).
Crazy, I hadn't appreciated that.
So:
And also option-left/right moves the cursor by word, and option-up/down moves (I think I almost never use it) by paragraph.