diff --git a/src/data/roadmaps/javascript/content/112-javascript-asynchronous-javascript/104-promises/index.md b/src/data/roadmaps/javascript/content/112-javascript-asynchronous-javascript/104-promises/index.md
index 09e17b573..0890a6650 100644
--- a/src/data/roadmaps/javascript/content/112-javascript-asynchronous-javascript/104-promises/index.md
+++ b/src/data/roadmaps/javascript/content/112-javascript-asynchronous-javascript/104-promises/index.md
@@ -8,3 +8,4 @@ Visit the following resources to learn more:
 - [@article@JavaScript Promises - Basics](https://www.codeguage.com/courses/advanced-js/promises-basics)
 - [@article@JavaScript Promises - Chaining](https://www.codeguage.com/courses/advanced-js/promises-chaining)
 - [@article@JavaScript Promises - Error Handling](https://www.codeguage.com/courses/advanced-js/promises-error-handling)
+- [@video@JavaScript Promises - Visualized](https://youtu.be/Xs1EMmBLpn4)
diff --git a/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/101-debugging-memory-leaks.md b/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/101-debugging-memory-leaks.md
index db5db3025..6393aac48 100644
--- a/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/101-debugging-memory-leaks.md
+++ b/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/101-debugging-memory-leaks.md
@@ -8,3 +8,4 @@ Visit the following resources to learn more:
 - [@article@Effective Javascript Debugging ](https://medium.com/swlh/effective-javascript-debugging-memory-leaks-75059b2436f6)
 - [@article@Debugging JavaScript memory leaks](https://www.debugbear.com/blog/debugging-javascript-memory-leaks)
 - [@article@Debugging Memory Leaks In Production JavaScript Applications](https://www.jackhoy.com/web-applications/2020/10/21/debugging-memory-leaks-in-nodejs.html)
+- [@video@JavaScript Memory Leaks Visualized and How To Fix Them](https://youtu.be/IkoGmbNJolo)
diff --git a/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/102-debugging-performance.md b/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/102-debugging-performance.md
index 8046ee078..bedff4a2f 100644
--- a/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/102-debugging-performance.md
+++ b/src/data/roadmaps/javascript/content/117-javascript-chrome-dev-tools/102-debugging-performance.md
@@ -1,3 +1,7 @@
 # Debugging performance
 
 Enter the dev tools and check out the Lighthouse tab. This is essentially a series of tests which analyses the currently open website on a bunch of metrics related to performance, page speed, accessibility, etc. Feel free to run the tests by clicking the **Analyse Page Load** button (you might want to do this in an incognito tab to avoid errors arising from extensions you're using). Once you have the results, take your time and read through them (and do click through to the reference pages mentioned alongside each test result to know more about it!)
+
+Visit the following resources to learn more:
+
+- [@article@Analyze runtime performance](https://developer.chrome.com/docs/devtools/performance)
diff --git a/src/data/roadmaps/javascript/content/118-working-with-apis/index.md b/src/data/roadmaps/javascript/content/118-working-with-apis/index.md
index 924d8445a..1ecd33c41 100644
--- a/src/data/roadmaps/javascript/content/118-working-with-apis/index.md
+++ b/src/data/roadmaps/javascript/content/118-working-with-apis/index.md
@@ -8,4 +8,4 @@ Visit the following resources to learn more:
 - [@article@XMLHttpRequest](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest)
 - [@article@Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API)
 - [@article@Is fetch API better than XMLHTTPRequest](https://medium.com/beginners-guide-to-mobile-web-development/the-fetch-api-2c962591f5c)
-- [@article@Ajax Battle: XMLHttpRequest vs the Fetch API](https://blog.openreplay.com/ajax-battle-xmlhttprequest-vs-the-fetch-api)
+- [@article@Ajax Battle: XMLHttpRequest vs the Fetch API](https://blog.openreplay.com/ajax-battle-xmlhttprequest-vs-fetch/)