diff --git a/README.md b/README.md
index f1791ee..7da82a8 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,8 @@
 
 > 本文档的内容可能随时更新，请注意查看本文档的内容。
 
+* [一、引言](intro)
+* [二、运行环境](env)
+* [三、使用说明](useages)
+
+[点击下载PDF版](useages.pdf ':ignore target=_self') -- `仍然建议使用在线版！`
\ No newline at end of file
diff --git a/_navbar.md b/_navbar.md
new file mode 100644
index 0000000..e69de29
diff --git a/_sidebar.md b/_sidebar.md
index e3b06b6..803117a 100644
--- a/_sidebar.md
+++ b/_sidebar.md
@@ -1,5 +1,5 @@
 <!-- docs/_sidebar.md -->
 
 * [一、引言](intro)
-* [二、环境](env)
+* [二、运行环境](env)
 * [三、使用说明](useages)
\ No newline at end of file
diff --git a/useages.pdf b/useages.pdf
new file mode 100644
index 0000000..2a61d9f
Binary files /dev/null and b/useages.pdf differ