diff --git a/FreeSql.DbContext/DbContext/DbContext.cs b/FreeSql.DbContext/DbContext/DbContext.cs
index 0d0fcc75..b5ab0cee 100644
--- a/FreeSql.DbContext/DbContext/DbContext.cs
+++ b/FreeSql.DbContext/DbContext/DbContext.cs
@@ -35,7 +35,7 @@ namespace FreeSql
             get
             {
                 if (_optionsPriv != null) return _optionsPriv;
-                if (FreeSqlDbContextExtenssions._dicSetDbContextOptions.TryGetValue(Orm, out _optionsPriv)) return _optionsPriv;
+                if (FreeSqlDbContextExtensions._dicSetDbContextOptions.TryGetValue(Orm, out _optionsPriv)) return _optionsPriv;
                 _optionsPriv = new DbContextOptions();
                 return _optionsPriv;
             }
diff --git a/FreeSql.DbContext/Extenssions/DependencyInjection.cs b/FreeSql.DbContext/Extensions/DependencyInjection.cs
similarity index 100%
rename from FreeSql.DbContext/Extenssions/DependencyInjection.cs
rename to FreeSql.DbContext/Extensions/DependencyInjection.cs
diff --git a/FreeSql.DbContext/Extenssions/FreeSqlDbContextExtenssions.cs b/FreeSql.DbContext/Extensions/FreeSqlDbContextExtensions.cs
similarity index 96%
rename from FreeSql.DbContext/Extenssions/FreeSqlDbContextExtenssions.cs
rename to FreeSql.DbContext/Extensions/FreeSqlDbContextExtensions.cs
index af755db5..e1b95f38 100644
--- a/FreeSql.DbContext/Extenssions/FreeSqlDbContextExtenssions.cs
+++ b/FreeSql.DbContext/Extensions/FreeSqlDbContextExtensions.cs
@@ -2,7 +2,7 @@
 using System;
 using System.Collections.Concurrent;
 
-public static class FreeSqlDbContextExtenssions
+public static class FreeSqlDbContextExtensions
 {
 
     /// <summary>
diff --git a/readme.md b/readme.md
index 0983dc63..a4a49e3b 100644
--- a/readme.md
+++ b/readme.md
@@ -20,7 +20,7 @@ FreeSql 是一个功能强大的对象关系映射程序(O/RM)，支持 .NETCore
 
 | | |
 | - | - |
-| <img src="https://user-images.githubusercontent.com/16286519/55138232-f5e19e80-516d-11e9-9144-173cc7e52845.png" width="40" height="59"/> | [《新手上路》](https://www.cnblogs.com/FreeSql/p/11531300.html) \| [《Select》](https://github.com/2881099/FreeSql/wiki/%e6%9f%a5%e8%af%a2) \| [《Update》](https://github.com/2881099/FreeSql/wiki/%e4%bf%ae%e6%94%b9) \| [《Insert》](https://github.com/2881099/FreeSql/wiki/%e6%b7%bb%e5%8a%a0) \| [《Delete》](https://github.com/2881099/FreeSql/wiki/%e5%88%a0%e9%99%a4) |
+| <img src="https://user-images.githubusercontent.com/16286519/55138232-f5e19e80-516d-11e9-9144-173cc7e52845.png" width="40" height="59"/> | [《新人学习指引》](https://www.cnblogs.com/FreeSql/p/11531300.html) \| [《Select》](https://github.com/2881099/FreeSql/wiki/%e6%9f%a5%e8%af%a2) \| [《Update》](https://github.com/2881099/FreeSql/wiki/%e4%bf%ae%e6%94%b9) \| [《Insert》](https://github.com/2881099/FreeSql/wiki/%e6%b7%bb%e5%8a%a0) \| [《Delete》](https://github.com/2881099/FreeSql/wiki/%e5%88%a0%e9%99%a4) |
 | <img src="https://user-images.githubusercontent.com/16286519/55138241-faa65280-516d-11e9-8b27-139dea46e4df.png" width="40" height="59"/> | [《表达式函数》](https://github.com/2881099/FreeSql/wiki/%e8%a1%a8%e8%be%be%e5%bc%8f%e5%87%bd%e6%95%b0) \| [《CodeFirst》](https://github.com/2881099/FreeSql/wiki/CodeFirst) \| [《DbFirst》](https://github.com/2881099/FreeSql/wiki/DbFirst) \| [《BaseEntity》](https://github.com/2881099/FreeSql/tree/master/Examples/base_entity) |
 | <img src="https://user-images.githubusercontent.com/16286519/55138263-06921480-516e-11e9-8da9-81f18a18b694.png" width="40" height="59"/> | [《Repository》](https://github.com/2881099/FreeSql/wiki/Repository) \| [《UnitOfWork》](https://github.com/2881099/FreeSql/wiki/%e5%b7%a5%e4%bd%9c%e5%8d%95%e5%85%83) \| [《过滤器》](https://github.com/2881099/FreeSql/wiki/%e8%bf%87%e6%bb%a4%e5%99%a8) \| [《乐观锁》](https://github.com/2881099/FreeSql/wiki/%e4%bf%ae%e6%94%b9) \| [《DbContext》](https://github.com/2881099/FreeSql/wiki/DbContext) |
 | <img src="https://user-images.githubusercontent.com/16286519/55138284-0eea4f80-516e-11e9-8764-29264807f402.png" width="40" height="59"/> | [《读写分离》](https://github.com/2881099/FreeSql/wiki/%e8%af%bb%e5%86%99%e5%88%86%e7%a6%bb) \| [《分区分表》](https://github.com/2881099/FreeSql/wiki/%e5%88%86%e5%8c%ba%e5%88%86%e8%a1%a8) \| [《租户》](https://github.com/2881099/FreeSql/wiki/%e7%a7%9f%e6%88%b7) \| [《AOP》](https://github.com/2881099/FreeSql/wiki/AOP) \| [*更新日志*](https://github.com/2881099/FreeSql/wiki/%e6%9b%b4%e6%96%b0%e6%97%a5%e5%bf%97) |