diff --git a/rtv/main.py b/rtv/main.py
index 8f7ccd5..701b1d4 100644
--- a/rtv/main.py
+++ b/rtv/main.py
@@ -31,6 +31,7 @@ Global Commands
   `q`                 : Quit the program.
   `o`                 : Open the url of the selected item in the default web
                         browser.
+  `?`                 : Show the help message.
 
 Subreddit Mode
   Right or `Enter`    : Open the currently selected submission in a new page.
diff --git a/rtv/submission.py b/rtv/submission.py
index 240e438..c23e637 100644
--- a/rtv/submission.py
+++ b/rtv/submission.py
@@ -6,7 +6,7 @@ import six
 
 from .content import SubmissionContent
 from .page import BasePage
-from .utils import LoadScreen, Color, ESCAPE
+from .utils import LoadScreen, Color, ESCAPE, display_help
 
 class SubmissionPage(BasePage):
 
@@ -54,6 +54,10 @@ class SubmissionPage(BasePage):
             elif cmd in (ESCAPE, curses.KEY_LEFT, ord('h')):
                 break
 
+            elif cmd == ord('?'):
+                display_help(self.stdscr)
+                self.draw()
+                
             elif cmd == ord('q'):
                 sys.exit()
 
diff --git a/rtv/subreddit.py b/rtv/subreddit.py
index 59cc3f2..31bd0d2 100644
--- a/rtv/subreddit.py
+++ b/rtv/subreddit.py
@@ -7,7 +7,7 @@ from .errors import SubredditNameError
 from .page import BasePage
 from .submission import SubmissionPage
 from .content import SubredditContent
-from .utils import LoadScreen, text_input, display_message, Color, ESCAPE
+from .utils import LoadScreen, text_input, display_message, Color, ESCAPE, display_help
 
 class SubredditPage(BasePage):
 
@@ -52,6 +52,10 @@ class SubredditPage(BasePage):
             elif cmd == curses.KEY_RESIZE:
                 self.draw()
 
+            elif cmd == ord('?'):
+                display_help(self.stdscr)
+                self.draw()
+
             elif cmd == ord('q'):
                 sys.exit()
 
@@ -67,7 +71,7 @@ class SubredditPage(BasePage):
                 self.reddit, name, self.loader)
 
         except (SubredditNameError, HTTPError):
-            display_message(self.stdscr, 'Invalid Subreddit')
+            display_message(self.stdscr, ['Invalid Subreddit'])
 
         else:
             self.nav.page_index, self.nav.cursor_index = 0, 0
@@ -132,4 +136,4 @@ class SubredditPage(BasePage):
             text = '{author}'.format(**data)
             win.addnstr(row, 1, text, n_cols-1, curses.A_BOLD)
             text = ' {subreddit}'.format(**data)
-            win.addnstr(text, n_cols - win.getyx()[1], Color.YELLOW)
\ No newline at end of file
+            win.addnstr(text, n_cols - win.getyx()[1], Color.YELLOW)
diff --git a/rtv/utils.py b/rtv/utils.py
index 94b6045..0eac40e 100644
--- a/rtv/utils.py
+++ b/rtv/utils.py
@@ -16,6 +16,25 @@ from .errors import EscapePressed
 
 ESCAPE = 27
 
+help_msg = """Global Commands
+  Arrow Keys or `hjkl`: Navigations.
+  `r` or `F5`         : Refresh the current page.
+  `q`                 : Quit the program.
+  `o`                 : Open the url of the selected item in the default web
+                        browser.
+  `?`                 : Show this help message.
+
+Subreddit Mode
+  Right or `Enter`    : Open the currently selected submission in a new page.
+  `/`                 : Open a prompt to switch to a different subreddit.
+
+Submission Mode
+  Right or `Enter`    : Toggle the currently selected comment between hidden
+                        and visible.
+  Left                : Exit the submission page and return to the subreddit.
+"""
+
+
 class Color(object):
 
     COLORS = {
@@ -118,17 +137,21 @@ def text_input(window):
 def display_message(stdscr, message):
     "Display a message box at the center of the screen and wait for a keypress"
 
-    message_len = len(message)
     n_rows, n_cols = stdscr.getmaxyx()
-    s_row = (n_rows - 2) // 2
-    s_col = (n_cols - message_len - 1) // 2
-    window = stdscr.derwin(3, message_len+2, s_row, s_col)
+
+    box_width = max(map(len, message))
+    box_height = len(message)
+    s_row = (n_rows - box_height) // 2
+    s_col = (n_cols - box_width - 1) // 2
+    window = stdscr.derwin(box_height + 2, box_width + 3, s_row, s_col)
 
     window.erase()
     window.border()
-    window.addstr(1, 1, message)
-    window.refresh()
 
+    for i in range(box_height):
+        window.addstr(i + 1, 1, message[i])
+
+    window.refresh()
     stdscr.getch()
 
     window.clear()
@@ -136,6 +159,14 @@ def display_message(stdscr, message):
     stdscr.refresh()
 
 
+def display_help(stdscr):
+    """Display a help message box at the center of the screen and wait for a
+    keypress"""
+
+    help_msgs = help_msg.split("\n")
+    display_message(stdscr, help_msgs)
+
+
 class LoadScreen(object):
 
     def __init__(self, stdscr):
@@ -250,4 +281,4 @@ def curses_session():
             stdscr.keypad(0)
             curses.echo()
             curses.nocbreak()
-            curses.endwin()
\ No newline at end of file
+            curses.endwin()