diff --git a/README.md b/README.md
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+++ b/README.md
@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_1099 TILs and counting..._
+_1100 TILs and counting..._
 
 ---
 
@@ -1001,6 +1001,7 @@ _1099 TILs and counting..._
 
 - [Add Types To An Object Destructuring](typescript/add-types-to-an-object-destructuring.md)
 - [Re-Export An Imported Type](typescript/re-export-an-imported-type.md)
+- [Zero-Config Environments For Trying Out Types](typescript/zero-config-environments-for-trying-out-types.md)
 
 ### Unix
 
diff --git a/typescript/zero-config-environments-for-trying-out-types.md b/typescript/zero-config-environments-for-trying-out-types.md
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+# Zero-Config Environments For Trying Out Types
+
+I've found a few zero-config environments for trying out TypeScript. These are
+environments where you can write out type definitions, use them in code, and
+see type errors as they arise. These are great if you are following along with
+an article as opposed to working with an existing project.
+
+1. [The TypeScript Playground](https://www.typescriptlang.org/play)
+
+This is the quickest environment to jump into. Though TS settings can be
+configured, it is just a playground. It is to grab a link to share.
+
+2. [Codesandbox's ts.new](https://ts.new)
+
+This URL shortcut will spin up a brand-new Vanilla TypeScript codesandbox
+project. This is a more full-fledged development environment for a TypeScript
+project, though still in the bowser. It is also easy to share, and you can
+download/export the code.
+
+3. [TSDX](https://tsdx.io/)
+
+This is a zero-config CLI for generating a TypeScript project for package
+development. It can generate Vanilla and React TypeScript projects. This lets
+you develop on your machine, rather than in a browser.  You'll now need to push
+the code to somewhere like GitHub to share it.
+
+[source](https://twitter.com/jbrancha/status/1375876670234722306?s=20)