diff --git a/01_Day_Introduction/01_day_starter/helloworld.js b/01_Day_Introduction/01_day_starter/helloworld.js
deleted file mode 100644
index 8c9e2c0..0000000
--- a/01_Day_Introduction/01_day_starter/helloworld.js
+++ /dev/null
@@ -1 +0,0 @@
-console.log('Hello, World!')
\ No newline at end of file
diff --git a/01_Day_Introduction/01_day_starter/index.html b/01_Day_Introduction/01_day_starter/index.html
deleted file mode 100644
index 7ed5b19..0000000
--- a/01_Day_Introduction/01_day_starter/index.html
+++ /dev/null
@@ -1,19 +0,0 @@
-
-
-
-
- 30DaysOfJavaScript
-
-
-
-
30DaysOfJavaScript:03 Day
-
Introduction
-
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/01_Day_Introduction/01_day_starter/introduction.js b/01_Day_Introduction/01_day_starter/introduction.js
deleted file mode 100644
index 316199c..0000000
--- a/01_Day_Introduction/01_day_starter/introduction.js
+++ /dev/null
@@ -1 +0,0 @@
-console.log('Welcome to 30DaysOfJavaScript')
\ No newline at end of file
diff --git a/01_Day_Introduction/01_day_starter/main.js b/01_Day_Introduction/01_day_starter/main.js
deleted file mode 100644
index 2b952bc..0000000
--- a/01_Day_Introduction/01_day_starter/main.js
+++ /dev/null
@@ -1,4 +0,0 @@
-// the variable values can be accessed from other variable.js file
-console.log(firstName, lastName, country, city, age, isMarried)
-console.log(gravity, boilingPoint, PI) // 9.81, 100, 3.14
-console.log(name, job, live)
\ No newline at end of file
diff --git a/01_Day_Introduction/01_day_starter/variable.js b/01_Day_Introduction/01_day_starter/variable.js
deleted file mode 100644
index 62558cb..0000000
--- a/01_Day_Introduction/01_day_starter/variable.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// Declaring different variables of different data types
-
-let firstName = 'Asabeneh' // first name of a person
-let lastName = 'Yetayeh' // last name of a person
-let country = 'Finland' // country
-let city = 'Helsinki' // capital city
-let age = 100 // age in years
-let isMarried = true
-
-// Declaring variables with number values
-
-const gravity = 9.81 // earth gravity in m/s2
-const boilingPoint = 100 // water boiling point, temperature in oC
-const PI = 3.14 // geometrical constant
-
-// Variables can also be declaring in one line separated by comma
-
-let name = 'Asabeneh', //name of a person
- job = 'teacher',
- live = 'Finland'
diff --git a/01_Day_Introduction/1_day_of_javascript/helloworld.js b/01_Day_Introduction/1_day_of_javascript/helloworld.js
new file mode 100644
index 0000000..4a41eb8
--- /dev/null
+++ b/01_Day_Introduction/1_day_of_javascript/helloworld.js
@@ -0,0 +1 @@
+console.log("Hello World!"); //print Hello World! in the console
\ No newline at end of file
diff --git a/01_Day_Introduction/1_day_of_javascript/index.html b/01_Day_Introduction/1_day_of_javascript/index.html
new file mode 100644
index 0000000..6e0c088
--- /dev/null
+++ b/01_Day_Introduction/1_day_of_javascript/index.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+ Day 1
+
+
+
+
+
+
+
Javascript Day 1
+
+
\ No newline at end of file
diff --git a/01_Day_Introduction/1_day_of_javascript/introduction.js b/01_Day_Introduction/1_day_of_javascript/introduction.js
new file mode 100644
index 0000000..8dd9af0
--- /dev/null
+++ b/01_Day_Introduction/1_day_of_javascript/introduction.js
@@ -0,0 +1 @@
+console.log('Welcome to Javascript' + ' Day 1'); //print Welcome to Javascript Day 1
\ No newline at end of file
diff --git a/01_Day_Introduction/1_day_of_javascript/main.js b/01_Day_Introduction/1_day_of_javascript/main.js
new file mode 100644
index 0000000..887822a
--- /dev/null
+++ b/01_Day_Introduction/1_day_of_javascript/main.js
@@ -0,0 +1,5 @@
+//The variable values can be accessed from other js file.
+
+console.log(firstName, lastName, country, city, age, single);
+console.log(gravity, boilingPoint, PI); //Output 9.81, 100, 3.14.
+console.log(name, job, live); //Output Kyrie, Player, Australia.
\ No newline at end of file
diff --git a/01_Day_Introduction/1_day_of_javascript/variable.js b/01_Day_Introduction/1_day_of_javascript/variable.js
new file mode 100644
index 0000000..5c8a764
--- /dev/null
+++ b/01_Day_Introduction/1_day_of_javascript/variable.js
@@ -0,0 +1,19 @@
+//Declaring different variables of different Data types.
+
+let firstName = 'Norman'; //First name of a person.
+let lastName = 'Taz'; //Last name of a person.
+let country = 'Philippines'; //Name of a country.
+let city = 'Manila'; //Name of a city.
+let age = 13; //Age for years.
+let single = true; //Status of the person.
+
+
+//Declaring values with number values.
+
+const gravity = 9.81; //Earth Gravitiy in m/s2.
+const boilingPoint = 100; //Water boiling point, temperature in oC.
+const PI = 4.14 //The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.
+
+//Variables can also be declared in one line separated by comma.
+
+let name = 'Kyrie', job = 'Player', live = 'Australia';
\ No newline at end of file
diff --git a/01_Day_Introduction/variable.js b/01_Day_Introduction/variable.js
deleted file mode 100644
index f5872af..0000000
--- a/01_Day_Introduction/variable.js
+++ /dev/null
@@ -1,17 +0,0 @@
-// Declaring different variables of different data types
-let firstName = 'Asabeneh' // first name of a person
-let lastName = 'Yetayeh' // last name of a person
-let country = 'Finland' // country
-let city = 'Helsinki' // capital city
-let age = 100 // age in years
-let isMarried = true
-
-// Declaring variables with number values
-const gravity = 9.81 // earth gravity in m/s2
-const boilingPoint = 100 // water boiling point, temperature in oC
-const PI = 3.14 // geometrical constant
-
-// Variables can also be declaring in one line separated by comma
-let name = 'Asabeneh', //name of a person
- job = 'teacher',
- live = 'Finland'