To do more than insert characters, you have to know how to move point (see Point). The simplest way to do this is with arrow keys, or by clicking the left mouse button where you want to move to.
NOTE: Many of the following commands have two versions, one that uses the function keys (e.g. <LEFT> or <END>) and one that doesn't. The former versions may only be available on X terminals (i.e. not on TTY's), but the latter are available on all terminals.
beginning-of-line).
end-of-line).
forward-char).
backward-char).
forward-word).
backward-word).
next-line). This command
attempts to keep the horizontal position unchanged, so if you start in
the middle of one line, you end in the middle of the next. When on the
last line of text, C-n creates a new line and moves onto it.
previous-line).
scroll-up).
scroll-down).
recenter). Text moves
on the frame to bring point to the center of the window.
move-to-window-line). Text does not move on the screen.
A numeric argument says which screen line to place point on. It counts
screen lines down from the top of the window (zero for the top line). A
negative argument counts lines from the bottom (−1 for the bottom
line).
transpose-chars).
beginning-of-buffer). With
numeric argument n, move to n/10 of the way from the top.
See Arguments, for more information on numeric arguments.
end-of-buffer).
goto-line). Line 1 is the beginning of the buffer.
set-goal-column). Henceforth, those
commands always move to this column in each line moved into, or as
close as possible given the contents of the line. This goal column remains
in effect until canceled.
If you set the variable track-eol to a non-nil value,
then C-n and C-p when at the end of the starting line move
to the end of another line. Normally, track-eol is nil.
See Variables, for how to set variables such as track-eol.
Normally, C-n on the last line of a buffer appends a newline to
it. If the variable next-line-add-newlines is nil, then
C-n gets an error instead (like C-p on the first line).