diff --git a/README.md b/README.md
index 000a7a7..8209422 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,6 @@ English | [中文](README.zh_CN.md)
 
 # gamf
 
-![Go](https://github.com/goccy/go-json/workflows/Go/badge.svg)
-[![GoDoc](https://godoc.org/github.com/goccy/go-json?status.svg)](https://pkg.go.dev/github.com/goccy/go-json?tab=doc)
-[![codecov](https://codecov.io/gh/goccy/go-json/branch/master/graph/badge.svg)](https://codecov.io/gh/goccy/go-json)
-
 Easiest AMF encoder/decoder for Go.
 
 # Features
@@ -21,6 +17,81 @@ go get github.com/gnolizuh/gamf
 
 # How to use
 
+## Integer
+
+```
+in := 1
+bs, _ := Marshal(&in)
+
+var out int
+Unmarshal(bs, &out)
+```
+
+## Float
+
+```
+in := 1.0
+bs, _ := Marshal(&in)
+
+var out float64
+Unmarshal(bs, &out)
+```
+
+## String
+
+```
+in := "1"
+bs, _ := Marshal(&in)
+
+var out string
+Unmarshal(bs, &out)
+```
+
+## Bool
+
+```
+in := "1"
+bs, _ := Marshal(&in)
+
+var out string
+Unmarshal(bs, &out)
+```
+
+## Slice
+
+```
+in := []int{1, 2, 3}
+bs, _ := Marshal(&in)
+
+var out []int
+Unmarshal(bs, &out)
+```
+
+## Struct
+
+### Struct to Struct
+
+```
+type Struct struct {
+    Int    int    `amf:"tag_int"`
+    String string `amf:"tag_string"`
+    Bool   bool   `amf:"tag_bool"`
+    Object struct {
+        Int    int    `amf:"tag_int"`
+        String string `amf:"tag_string"`
+        Bool   bool   `amf:"tag_bool"`
+    } `amf:"tag_object"`
+}
+
+in := Struct{} // with value be initialized
+bs, _ := Marshal(&in)
+
+out := Struct{}
+Unmarshal(bs, &out)
+```
+
+### Struct to Map
+
 ```
 type Struct struct {
     Int    int    `amf:"tag_int"`
@@ -33,10 +104,21 @@ type Struct struct {
     } `amf:"tag_object"`
 }
 
-bs, _ := Marshal(&Struct{})
+in := Struct{} // with value be initialized
+bs, _ := Marshal(&in)
+
+out := make(map[string]interface{})
+Unmarshal(bs, &out)
+```
+
+## Map
+
+```
+in := map[string]interface{}{"Int": 1.0, "String": "1", "Bool": true}
+bs, _ := Marshal(&in)
 
-s := Struct{}
-Unmarshal(bs, &s)
+out := make(map[string]interface{})
+Unmarshal(bs, &out)
 ```
 
 # Reference
diff --git a/README.zh_CN.md b/README.zh_CN.md
index ed44418..0eac179 100644
--- a/README.zh_CN.md
+++ b/README.zh_CN.md
@@ -2,10 +2,6 @@
 
 # gamf
 
-![Go](https://github.com/goccy/go-json/workflows/Go/badge.svg)
-[![GoDoc](https://godoc.org/github.com/goccy/go-json?status.svg)](https://pkg.go.dev/github.com/goccy/go-json?tab=doc)
-[![codecov](https://codecov.io/gh/goccy/go-json/branch/master/graph/badge.svg)](https://codecov.io/gh/goccy/go-json)
-
 基于Go实现的极简AMF编解码库
 
 # 特性
@@ -21,6 +17,81 @@ go get github.com/gnolizuh/gamf
 
 # 用法
 
+## Integer
+
+```
+in := 1
+bs, _ := Marshal(&in)
+
+var out int
+Unmarshal(bs, &out)
+```
+
+## Float
+
+```
+in := 1.0
+bs, _ := Marshal(&in)
+
+var out float64
+Unmarshal(bs, &out)
+```
+
+## String
+
+```
+in := "1"
+bs, _ := Marshal(&in)
+
+var out string
+Unmarshal(bs, &out)
+```
+
+## Bool
+
+```
+in := "1"
+bs, _ := Marshal(&in)
+
+var out string
+Unmarshal(bs, &out)
+```
+
+## Slice
+
+```
+in := []int{1, 2, 3}
+bs, _ := Marshal(&in)
+
+var out []int
+Unmarshal(bs, &out)
+```
+
+## Struct
+
+### Struct to Struct
+
+```
+type Struct struct {
+    Int    int    `amf:"tag_int"`
+    String string `amf:"tag_string"`
+    Bool   bool   `amf:"tag_bool"`
+    Object struct {
+        Int    int    `amf:"tag_int"`
+        String string `amf:"tag_string"`
+        Bool   bool   `amf:"tag_bool"`
+    } `amf:"tag_object"`
+}
+
+in := Struct{} // with value be initialized
+bs, _ := Marshal(&in)
+
+out := Struct{}
+Unmarshal(bs, &out)
+```
+
+### Struct to Map
+
 ```
 type Struct struct {
     Int    int    `amf:"tag_int"`
@@ -33,10 +104,21 @@ type Struct struct {
     } `amf:"tag_object"`
 }
 
-bs, _ := Marshal(&Struct{})
+in := Struct{} // with value be initialized
+bs, _ := Marshal(&in)
+
+out := make(map[string]interface{})
+Unmarshal(bs, &out)
+```
+
+## Map
+
+```
+in := map[string]interface{}{"Int": 1.0, "String": "1", "Bool": true}
+bs, _ := Marshal(&in)
 
-s := Struct{}
-Unmarshal(bs, &s)
+out := make(map[string]interface{})
+Unmarshal(bs, &out)
 ```
 
 # 引用