diff --git a/1-what-is-programming/0-javascript/README.md b/1-what-is-programming/0-javascript/README.md
index 3d44778c..b60a97dd 100644
--- a/1-what-is-programming/0-javascript/README.md
+++ b/1-what-is-programming/0-javascript/README.md
@@ -113,8 +113,7 @@ in a browser, each one has a specific use case:
   [code.org](https://code.org/) (develop and play games with JS),
   [editor.p5js.org](https://editor.p5js.org/) (create interactive artwork),
   [PencilCode](https://pencilcode.net/edit/myprogram) (write your code as blocks
-  or text), [Ocelot](https://code.ocelot-ide.org/) (disallows "bad" language
-  features and has helpful error messages).
+  or text).
 
 ---
 
@@ -135,11 +134,9 @@ secure and developer-friendly alternative to Node.js.
 
 - [javascript.info/intro](https://javascript.info/intro)
 - [The Net Ninja](https://www.youtube.com/watch?v=VB7y0yxZjro)
-- [MDN](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/First_steps/What_is_JavaScript)
 - [Andrew Mosh](https://www.youtube.com/watch?v=W6NZfCO5SIk) \(first 5 minutes\)
 - [Code School](https://www.youtube.com/watch?v=nItSSTwBvSU)
 - [MDN: First Steps](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/First_steps/What_is_JavaScript)
-- [javascript.info](https://javascript.info/intro)
 - [Danielle Thé](https://www.youtube.com/watch?v=gT0Lh1eYk78)
 
 ---
diff --git a/1-what-is-programming/0-javascript/some-history.md b/1-what-is-programming/0-javascript/some-history.md
index 1cd44700..5b2f7b54 100644
--- a/1-what-is-programming/0-javascript/some-history.md
+++ b/1-what-is-programming/0-javascript/some-history.md
@@ -40,7 +40,6 @@ grow, but this is the case for JavaScript.
 
 - [You Don't Know JS](https://github.com/getify/You-Dont-Know-JS/blob/2nd-ed/get-started/ch1.md#backwards--forwards)
 - [Why is JavaScript backwards compatible to a fault?](https://stackoverflow.com/questions/4937245/why-is-javascript-backwards-compatible-to-a-fault)
-- [edytawrobel](https://www.edytawrobel.com/js-compatibility/)
 - [tonsky.me](https://tonsky.me/blog/compatibility/)
 - [rohitdhatrak](https://www.rohitdhatrak.com/backwards-forwards-compatibility/)
 - [Chrome Breaks the Web](https://www.theregister.com/2021/10/04/chrome_breaks_web/)
diff --git a/2-just-enough-javascript/02-primitive-values/README.md b/2-just-enough-javascript/02-primitive-values/README.md
index 84825887..6a943d5d 100644
--- a/2-just-enough-javascript/02-primitive-values/README.md
+++ b/2-just-enough-javascript/02-primitive-values/README.md
@@ -45,6 +45,8 @@ console.log(null);
 'use strict';
 console.log('--- numbers: numbers that are not wrapped in quotation marks ---');
 console.log(12);
+console.log(3.14);
 console.log(0);
 console.log(-12);
+console.log(10_000_000_000);
 ```