diff --git a/README.md b/README.md
index 699b537..b80a925 100644
--- a/README.md
+++ b/README.md
@@ -172,6 +172,8 @@ JavaScript **Arrays** are regular objects for which there is a particular relati
 
 - [JavaScript data types and data structures - Mozilla Developer Network](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures)
 - [A Beginner’s Guide to JavaScript Variables and Datatypes - SitePoint](https://www.sitepoint.com/beginners-guide-javascript-variables-and-datatypes/)
+- [JavaScript Cheat Sheet](https://www.interviewbit.com/javascript-cheat-sheet)
+- [Data types in Javascript](https://www.scaler.com/topics/javascript/data-types-in-javascript/)
 
 #### Object Oriented Programming in JavaScript
 
@@ -213,7 +215,9 @@ Though there are other ways like `Babel`, `Rollup` etc., but that need some buil
 * [You-Dont-Know-JS](https://github.com/getify/You-Dont-Know-JS)
 * [JavaScript - Mozilla Developer Network](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
 * [Algorithms, 4th Edition (book by: Robert Sedgewick and Kevin Wayne)](http://algs4.cs.princeton.edu/home/)
+* [Scaler Topics](https://www.scaler.com/topics/)
 * [Khan Academy tutorial on Algorithms](https://www.khanacademy.org/computing/computer-science/algorithms)
 * [Topcoder Tutorials](https://www.topcoder.com/community/data-science/data-science-tutorials/)
 * [GeeksforGeeks](http://www.geeksforgeeks.org/)
 * [hackerearth Tutorial](https://www.hackerearth.com/practice/)
+* [interviewbit](https://www.interviewbit.com/courses/programming/)