diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -80,6 +80,9 @@
   putStrLn $ "Egison Tutorial for Version " ++ showVersion P.version ++ " (C) 2013-2014 Satoshi Egi"
   putStrLn $ "http://www.egison.org"
   putStrLn $ "Welcome to Egison Tutorial!"
+  putStrLn $ "** Info **"
+  putStrLn $ "We can use a \'Tab\' key to complete keywords on the interpreter."
+  putStrLn $ "If we type a \'Tab\' key after a closed parenthesis, the next closed parenthesis will be completed."
 
 showFinishMessage :: IO ()
 showFinishMessage = do
@@ -311,7 +314,7 @@
     ],
   Section "Define your own functions"
    [
-    Content "We can bind a value to a variable with a 'define' expression.\nWe can easily get the value we binded to the variable."
+    Content "We can bind a value to a variable with a 'define' expression.\nWe can easily get the value we bound to the variable."
      ["(define $x 10)", "x"]
      [],
     Content "We can define a function. Let's define a function and test it."
diff --git a/egison-tutorial.cabal b/egison-tutorial.cabal
--- a/egison-tutorial.cabal
+++ b/egison-tutorial.cabal
@@ -1,5 +1,5 @@
 Name:                egison-tutorial
-Version:             3.3.0
+Version:             3.3.1
 Synopsis:            A tutorial program for the programming language Egison
 Description:         A tutorial program for the programming language Egison.
                      Egison is the programming langugage that realized non-linear pattern-matching with unfree data types.