diff --git a/docker/README.md b/docker/README.md
index a382804..e621f4b 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -1,12 +1,24 @@
-# Docker Best Practices
+$# resources on docker 
 
-## Installation in macOS
+<br>
 
-```
-brew cask install docker
-```
 
-### Shared Folders
+### resources
+
+* [Container Technology Wiki ](https://www.aquasec.com/wiki/display/containers/).
+* [250 Practice Questions for the DCA Exam](https://medium.com/bb-tutorials-and-thoughts/250-practice-questions-for-the-dca-exam-84f3b9e8f5ce).
+
+
+
+<br>
+
+---
+
+### tricks and notes
+
+<br>
+
+#### shared Folders
 
 Removing some of the default shared folders can decrease CPU usage (e.g. remove `/Volumes` and `/private`). 
 
@@ -16,7 +28,7 @@ Check storage with:
 docker info |grep Storage
 ```
 
-### Performance
+#### performance
 
 In case of performance problems you can run:
 
@@ -25,7 +37,7 @@ docker run --rm=true -it --privileged --pid=host \
     <image name> /usr/bin/top
 ```
 
-### Cleaning Up
+#### cleaning Up
 
 See disk space:
 
@@ -40,13 +52,4 @@ Remove stopped containers, dangling images, the build cache, and unused networks
 docker system prune
 ```
 
-### Tutorials and Articles
-
-### Containers in General
-
-* [Container Technology Wiki ](https://www.aquasec.com/wiki/display/containers/).
-
-####  Docker Certified Associate exam
-
-* [250 Practice Questions for the DCA Exam](https://medium.com/bb-tutorials-and-thoughts/250-practice-questions-for-the-dca-exam-84f3b9e8f5ce).