Update README.md

@@ -45,6 +45,15 @@ KHU-Hub repo : [khuhub.khu.ac.kr/2018102216/dev-profile](https://khuhub.khu.ac.k
 
 <br>
 
+### ● Home Page
+
+    1. you can join or login with github.
+    2. you can search.
+
+![homepage](https://oss-2020105657.s3.amazonaws.com/homepage.png)
+
+<br>
+
 ### ● Test installation
 
 <details>
@@ -71,6 +80,46 @@ npm run dev:assets
 
 <br>
 
+### ● Installation MongoDB
+
+    1. Access to the MongoDB homepage.
+
+![homepage](https://oss-2020105657.s3.amazonaws.com/MongoDB+homepage.png)
+
+    2. Select options and download MongoDB.
+
+![options](https://oss-2020105657.s3.amazonaws.com/MongoDB+install.png)
+
+    3. If this screen appears when installing MongoDB, please select 'complete' and proceed.
+
+![precaution](https://oss-2020105657.s3.amazonaws.com/MongoDB+precaution.png)
+
+    4. When you enter 'mongo' command in vsc terminal, it is installed well when the screen appears as below.
+
+![image](https://oss-2020105657.s3.amazonaws.com/MongoDB+installation+well.png)
+
+### ● To setting environment variable.
+
+```bash
+    -ps. When entering 'mongo' command in vsc terminal, skip this part if it runs well.
+```
+
+    1. Find folder where mongoDB is installed, and make a copy of the folder's route.
+
+![image](https://oss-2020105657.s3.amazonaws.com/MongoDB+path.png)
+
+    2. And you open the 'environment variable' page. If using window environment, you can use command (window + R) and input 'sysdm.cpl ,3'. And click 'environment variable'.
+
+![image](https://oss-2020105657.s3.amazonaws.com/environment+window.png)
+
+    3. You must find 'path' in 'system variable' categroy, not 'users variable'. If you find 'path' in 'system variable', then check 'path' and click 'Editing'.
+
+![image](https://oss-2020105657.s3.amazonaws.com/Find+path+in+system+variable.png)
+
+## <br>
+
+<br>
+
 ### ● MongoDB Installation
 
     1. Access to the MongoDB homepage.