diff --git a/docs/.vuepress/config.js b/docs/.vuepress/config.js
index 970b0cd93..da165d0fe 100644
--- a/docs/.vuepress/config.js
+++ b/docs/.vuepress/config.js
@@ -21,7 +21,7 @@ module.exports = {
     '/': {
       lang: 'ko',
       title: 'Cracking Vue.js',
-      description: 'JavaScript, Vue.js, Nuxt.js',
+      description: 'JavaScript, Vue.js, Nuxt.js and TypeScript',
     },
   },
   themeConfig: {
diff --git a/docs/textbook.md b/docs/textbook.md
index 5aa75f9e3..d5af04ed3 100644
--- a/docs/textbook.md
+++ b/docs/textbook.md
@@ -29,7 +29,7 @@ title: Introduction
 
 ### 📖 기타
 
-- [Typescript](/ts/intro.html)
+- [TypeScript](/ts/intro.html)
 - [Nuxt](/nuxt/intro.html)
 - [VuePress](/vuepress/learning-note.html)
-- [npm vs yarn](/packageManager/npm-vs-yarn.html)
+- [NPM vs Yarn](/package-manager/npm-vs-yarn.html)