There are several Dired commands for visiting or examining the files listed in the Dired buffer. All of them apply to the current line’s file; if that file is really a directory, these commands invoke Dired on that subdirectory (making a separate Dired buffer).
Visit the file described on the current line, like typing
C-x C-f and supplying that file name (
dired-find-file). See Visiting.
f, but uses another window to display the file’s buffer (
dired-find-file-other-window). The Dired buffer remains visible in the first window. This is like using
C-x 4 C-f to visit the file. See Windows.
Visit the file described on the current line, and display the buffer in another window, but do not select that window (
Visit the file whose name you clicked on (
dired-mouse-find-file-other-window). This uses another window to display the file, like the
View the file described on the current line, with View mode (
dired-view-file). View mode provides convenient commands to navigate the buffer but forbids changing it; See View Mode.
Visit the parent directory of the current directory (
dired-up-directory). This is equivalent to moving to the line for
.. and typing