diff --git a/Adding collaborators to a personal repository 添加合作者到个人的库.md b/Adding collaborators to a personal repository 添加合作者到个人的库.md
index 8f56630..f525b87 100644
--- a/Adding collaborators to a personal repository 添加合作者到个人的库.md	
+++ b/Adding collaborators to a personal repository 添加合作者到个人的库.md	
@@ -1,6 +1,8 @@
 Adding collaborators to a personal repository 添加合作者到个人的库
 ===========
  
+通过将人添加为你个人库的合作者，使得这些人拥有对库 read/write 访问权限 
 
+*提示：可以将 read/write 访问权限 授予合作者在一个个人的库。组织的库将会有更多的全新啊。详见[不同访问权限之间的区别](https://github.com/waylau/github-help/blob/master/What%20are%20the%20different%20access%20permissions%20%E4%B8%8D%E5%90%8C%E8%AE%BF%E9%97%AE%E6%9D%83%E9%99%90%E4%B9%8B%E9%97%B4%E7%9A%84%E5%8C%BA%E5%88%AB.md)*
 
 *参考*：[https://help.github.com/articles/adding-collaborators-to-a-personal-repository/](https://help.github.com/articles/adding-collaborators-to-a-personal-repository/)
diff --git a/Signing up for a new GitHub account 注册新账号.md b/Signing up for a new GitHub account 注册新账号.md
new file mode 100644
index 0000000..a8adf6d
--- /dev/null
+++ b/Signing up for a new GitHub account 注册新账号.md	
@@ -0,0 +1,6 @@
+Signing up for a new GitHub account 注册新账号
+===========
+ 
+  
+
+*参考*：[https://help.github.com/articles/signing-up-for-a-new-github-account/](https://help.github.com/articles/signing-up-for-a-new-github-account/)