diff --git a/solutions/day-01/datatypes.js b/solutions/day-01/datatypes.js
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+// comments can make code readable
+// Welcome to 30DaysOfJavaScript
+/* comments can make code readable,
+easy to reuse and informative */
+
+console.log(typeof("string"));
+console.log(typeof(true));
+console.log(typeof(null));
+console.log(typeof(undefined));
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diff --git a/solutions/day-01/index.html b/solutions/day-01/index.html
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+
+
+
+
+
+ Day 1 Exercise
+
+
+ This is the day 1 exercise !
+
+
+
+
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diff --git a/solutions/day-01/variable.js b/solutions/day-01/variable.js
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+++ b/solutions/day-01/variable.js
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+let a = "string";
+let b = true;
+let c = null;
+let d = undefined;
+
+let firstName = "Eligijus";
+let lastName = "Dzikavicius";
+let isMarried = false;
+let age = 17;
+let live = "Lithuania"
+
+let myAge = 17;
+let yourAge = 30;
+
+console.log("I am " + myAge + " years old.");
+console.log("You are " + yourAge + " years old.");
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