diff --git a/Exercises/dayone.js b/Exercises/dayone.js
index e69de29..57d0f0f 100644
--- a/Exercises/dayone.js
+++ b/Exercises/dayone.js
@@ -0,0 +1,65 @@
+/* Day 1: Exercises
+
+Write a single line comment which says, comments can make code readable
+
+Write another single comment which says, Welcome to 30DaysOfJavaScript
+
+Write a multiline comment which says, comments can make code readable, easy to reuse and informative
+
+Create a variable.js file and declare variables and assign string, boolean, undefined and null data types
+
+Create datatypes.js file and use the JavaScript typeof operator to check different data types. Check the data type of each variable
+
+Declare four variables without assigning values
+
+Declare four variables with assigned values
+
+Declare variables to store your first name, last name, marital status, country and age in multiple lines
+
+Declare variables to store your first name, last name, marital status, country and age in a single line
+
+Declare two variables myAge and yourAge and assign them initial values and log to the browser console. */
+
+
+
+// Comments can make code readable
+
+// Welcome to my exercises
+
+/* Comments make code readable, easy to reuse and informative */
+
+var str = 'String'
+var boo = true
+var boo2 = false
+var und = undefined
+var nullType = null
+
+console.log(typeof str)
+console.log(typeof boo)
+console.log(typeof boo2)
+console.log(typeof und)
+console.log(typeof nullType)
+
+var value1 = undefined
+var value2 = undefined
+var value3 = undefined
+var value4 = undefined
+
+const firstName = 'Eray'
+const lastName = 'Gundogmus'
+const maritalStatus = 'Single'
+const country = 'Turkey'
+
+const person = {
+    firstName: "Eray", lastName: "Gundogmus", maritalStatus: "single", country: "turkey"}
+console.log(person)
+
+let myAge = 24 
+let yourAge = 250
+
+if (myAge < yourAge){
+    console.log('You are older than me.')
+} else {
+    console.log('I am older than you.')
+}
+