diff --git a/README.md b/README.md
index eae5eeb..d52009e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,74 @@
 # buildj
 buildj - java build tool
+
+#### Install
+
+```
+cargo install --git https://github.com/jht5945/buildj
+```
+
+#### Usage
+
+Help:
+```
+$ buildj :::
+[INFO] buildj - version 0.1
+[INFO] Arguments: ["./buildj", ":::"]
+
+buildj :::                                             - print this message
+buildj :::help                                         - print this message
+buildj :::create --java<version> --maven<version>      - create java-version, maven-version project
+buildj :::create --java<version> --gradle<version>     - create java-version, gradle-version project
+buildj :::java<version> [-version]                     - run java with assigned version, e.g. buildj :::java1.8 -version
+buildj :::maven<version> [--java<version>]             - run maven with assigned version and java version, e.g. buildj :::maven3.5.2 --java1.8 ARGS
+buildj :::gradle<version> ]--java<version>]            - run gradle with assigned version and java version, e.g. buildj :::gradle3.5.1 --java1.8 ARGS
+buildj                                                 - run build, run assigned version builder tool
+```
+
+Run Java:
+```
+$ buildj :::java9 -version
+[INFO] buildj - version 0.1
+[INFO] Arguments: ["./buildj", ":::java9", "-version"]
+[OK   ] Find java home: /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
+java version "9.0.4"
+Java(TM) SE Runtime Environment (build 9.0.4+11)
+Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)
+```
+
+Run Maven:
+```
+$ buildj :::maven3.5.2 -version
+[INFO] buildj - version 0.1
+[INFO] Arguments: ["./buildj", ":::maven3.5.2", "-version"]
+[OK   ] BUILDER_HOME = /Users/hatterjiang/.jssp/builder/maven-3.5.2/apache-maven-3.5.2
+Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T15:58:13+08:00)
+Maven home: /Users/hatterjiang/.jssp/builder/maven-3.5.2/apache-maven-3.5.2
+Java version: 1.8.0, vendor: Oracle Corporation
+Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/jre
+Default locale: en_US, platform encoding: UTF-8
+OS name: "mac os x", version: "10.14.4", arch: "x86_64", family: "mac"
+```
+
+Run Gradle:
+```
+$ buildj :::gradle3.5.1 -version
+[INFO] buildj - version 0.1
+[INFO] Arguments: ["./buildj", ":::gradle3.5.1", "-version"]
+[OK   ] BUILDER_HOME = /Users/hatterjiang/.jssp/builder/gradle-3.5.1/gradle-3.5.1
+
+------------------------------------------------------------
+Gradle 3.5.1
+------------------------------------------------------------
+
+Build time:   2017-06-16 14:36:27 UTC
+Revision:     d4c3bb4eac74bd0a3c70a0d213709e484193e251
+
+Groovy:       2.4.10
+Ant:          Apache Ant(TM) version 1.9.6 compiled on June 29 2015
+JVM:          1.8.0 (Oracle Corporation 25.0-b70)
+OS:           Mac OS X 10.14.4 x86_64
+```
+
+
+