diff --git a/README.md b/README.md
index 7e1457a..5b5d09a 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,169 @@ Adb，即 [Android Debug Bridge](https://developer.android.com/studio/command-li
 
 ## 目录
 
-* [查看手机型号](#查看手机型号)
-* [查看手机电池状况](#查看手机电池状况)
-* [查看手机分辨率](#查看手机分辨率)
-* [查看 android\_id](#查看-android_id)
-* [录制屏幕](#录制屏幕)
-* [查看前台 Activity](#查看前台-activity)
+* [设备连接管理](#设备连接管理)
+	* [查询已连接设备/模拟器](#查询已连接设备模拟器)
+	* [无线连接](#无线连接)
+* [应用管理](#应用管理)
+	* [查看所有已安装应用](#查看所有已安装应用)
+	* [安装 APK](#安装-apk)
+	* [卸载应用](#卸载应用)
+	* [调起应用](#调起应用)
+	* [查看前台 Activity](#查看前台-activity)
+* [查看设备信息](#查看设备信息)
+	* [查看手机型号](#查看手机型号)
+	* [查看手机电池状况](#查看手机电池状况)
+	* [查看手机分辨率](#查看手机分辨率)
+	* [查看 android\_id](#查看-android_id)
+* [其它实用功能](#其它实用功能)
+	* [录制屏幕](#录制屏幕)
+
+## 设备连接管理
+
+### 查询已连接设备/模拟器
+
+命令：
+
+```
+adb devices
+```
+
+输出示例：
+
+```
+List of devices attached
+cf264b8f	device
+emulator-5554	device
+```
+
+该输出显示当前已经连接了两台设备/模拟器，`cf264b8f` 与 `emulator-5554` 分别是它们的 SN。从 `emulator-5554` 这个名字可以看出它是一个 Android 模拟器。
+
+### 无线连接
+
+## 应用管理
+
+### 查看所有已安装应用
+
+命令：
+
+```
+adb shell pm list packages
+```
+
+输出示例：
+
+```
+package:com.android.smoketest
+package:com.example.android.livecubes
+package:com.android.providers.telephony
+package:com.google.android.googlequicksearchbox
+package:com.android.providers.calendar
+package:com.android.providers.media
+package:com.android.protips
+package:com.android.documentsui
+package:com.android.gallery
+package:com.android.externalstorage
+package:com.android.htmlviewer
+package:com.android.mms.service
+package:com.android.providers.downloads
+package:com.android.messaging
+package:com.android.browser
+package:com.android.soundrecorder
+package:com.android.defcontainer
+package:com.android.providers.downloads.ui
+package:com.android.vending
+package:com.android.pacprocessor
+package:com.wooyun.summit
+package:com.android.certinstaller
+package:android
+package:com.android.contacts
+package:com.android.backupconfirm
+package:com.google.android.launcher
+package:com.android.statementservice
+package:com.android.calendar
+package:com.android.providers.settings
+package:com.android.sharedstoragebackup
+package:com.android.printspooler
+package:com.android.dreams.basic
+package:com.android.webview
+package:com.android.inputdevices
+package:com.android.backuptester
+package:com.android.sdksetup
+package:com.google.android.apps.maps
+package:com.android.development_settings
+package:com.android.server.telecom
+package:com.android.keychain
+package:com.android.camera
+package:com.android.dialer
+package:com.android.emulator.smoketests
+package:com.google.android.gms
+package:com.google.android.gsf
+package:com.android.packageinstaller
+package:com.svox.pico
+package:com.example.android.apis
+package:com.android.proxyhandler
+package:com.android.fallback
+package:com.android.inputmethod.latin
+package:com.android.managedprovisioning
+package:com.google.android.gsf.login
+package:com.android.wallpaper.livepicker
+package:com.android.netspeed
+package:jp.co.omronsoft.openwnn
+package:com.android.settings
+package:com.android.calculator2
+package:com.android.gesture.builder
+package:com.android.vpndialogs
+package:com.android.email
+package:com.android.music
+package:com.android.phone
+package:com.android.shell
+package:com.android.providers.userdictionary
+package:com.android.location.fused
+package:com.android.deskclock
+package:com.android.systemui
+package:com.android.exchange
+package:com.android.smoketest.tests
+package:com.android.customlocale2
+package:com.example.android.softkeyboard
+package:org.mazhuang.androiduidemos
+package:com.google.android.play.games
+package:com.android.development
+package:com.android.providers.contacts
+package:com.android.captiveportallogin
+package:com.android.widgetpreview
+```
+
+### 安装 APK
+
+命令：
+
+```
+adb install /path/to/filename.apk
+```
+
+// TODO: 命令行参数，常见错误输出等
+
+### 卸载应用
+
+### 调起应用
+
+### 查看前台 Activity
+
+命令：
+
+```
+adb shell dumpsys activity activities | grep mFocusedActivity
+```
+
+输出示例：
+
+```
+mFocusedActivity: ActivityRecord{8079d7e u0 com.cyanogenmod.trebuchet/com.android.launcher3.Launcher t42}
+```
+
+其中的 `com.cyanogenmod.trebuchet/com.android.launcher3.Launcher` 就是当前处于前台的 Activity。
+
+## 查看设备信息
 
 ### 查看手机型号
 
@@ -86,6 +243,8 @@ adb shell settings get secure android_id
 51b6be48bac8c569
 ```
 
+## 其它实用功能
+
 ### 录制屏幕
 
 录制屏幕以 mp4 格式保存到 /sdcard：
@@ -110,19 +269,3 @@ adb pull /sdcard/filename.mp4
 | --bit-rate RATE     | 视频的比特率，默认是 4Mbps。                    |
 | --time-limit TIME   | 录制时长，单位秒。                              |
 | --verbose           | 输出更多信息。                                  |
-
-### 查看前台 Activity
-
-命令：
-
-```
-adb shell dumpsys activity activities | grep mFocusedActivity
-```
-
-输出示例：
-
-```
-mFocusedActivity: ActivityRecord{8079d7e u0 com.cyanogenmod.trebuchet/com.android.launcher3.Launcher t42}
-```
-
-其中的 `com.cyanogenmod.trebuchet/com.android.launcher3.Launcher` 就是当前处于前台的 Activity。