diff --git a/README.md b/README.md
index 23f2e86..da81216 100644
--- a/README.md
+++ b/README.md
@@ -12,11 +12,63 @@ Korean
 위 라이브러리는 윈도우 API 함수를 후킹해주는 라이브러리이다. 후킹대상은 현재 프로세스가 아닌 다른 프로세스를 대상으로도 진행 할 수 있다.
 
 # How to used
-<img src="https://github.com/jungjin0003/WinHook/blob/master/Example%20Code.png"></img>
-## Struct Explanation
+```
+#include <stdio.h>
+#include <windows.h>
+#include "WinHook.h"
+
+typedef int(__stdcall* MESSAGEBOXA)(HWND, LPCSTR, LPCSTR, UINT);
+
+typedef struct {
+    MESSAGEBOXA pFunc;
+    char Text[10];
+} data;
+
+int NewMessageBox(HWND hWnd, LPCSTR lpText, LPCSTR lpCation, UINT uType)
+{
+    volatile data *Data = 0xCCCCCCCC;
+    return ((MESSAGEBOXA)Data->pFunc)(hWnd, Data->Text, Data->Text, uType);
+}
+int AtherFunc() {}
+
+int main()
+{
+    data Data;
+    strcpy(Data.Text, "Hooked!");
+    WINAPI_BASIC_HOOK_DATAA WinApi_Basic_Hook_Data;
+    strcpy(WinApi_Basic_Hook_Data.DLLName, "user32.dll");
+    WinApi_Basic_Hook_Data.lpOrigin = MessageBoxA;
+    WinApi_Basic_Hook_Data.lpNewFunction = NewMessageBox;
+    WinApi_Basic_Hook_Data.lpParameter = &Data;
+    WinApi_Basic_Hook_Data.Parameter = TRUE;
+    WinApi_Basic_Hook_Data.dwParameterSize = sizeof(data);
+    WinApi_Basic_Hook_Data.dwNewFuncSize = (Address)AtherFunc - (Address)NewMessageBox;
+    WinApi_Basic_Hook_Data.lpCopyOrigin = &Data.pFunc;
+
+    // DWORD PID;
+    // scanf("%d", &PID);
+    // HookA(&WinApi_Basic_Hook_Data, NULL, "TEST.exe");
+    // HookA(&WinApi_Basic_Hook_Data, PID, NULL);
+}
+```
+## Structs
 ASCII Struct
 ```
-typedef struct _WINAPI_HOOK_DATAA {
+typedef struct _WINAPI_BASIC_HOOK_DATAA
+{
+    PVOID lpOrigin;
+    PVOID *lpCopyOrigin;
+    PVOID lpNewFunction;
+    PVOID lpParameter;
+    BOOL Parameter;
+    DWORD dwParameterSize;
+    DWORD dwNewFuncSize;
+    char DLLName[MAX_PATH]; 
+} WINAPI_BASIC_HOOK_DATAA, *PWINAPI_BASIC_HOOK_DATAA;
+```
+```
+typedef struct _WINAPI_HOOK_DATAA 
+{
     HANDLE hProcess;
     HMODULE hModule;
     _require_ PVOID lpOrigin; // Address of function to hook
@@ -28,18 +80,28 @@ typedef struct _WINAPI_HOOK_DATAA {
     PVOID lpParameterEx;
     BOOL Parameter; // True is Parameter enabled and False is disable
     DWORD dwParameterSize;
-    _require_ DWORD dwNewFuncSize; Size of (new) function address to be jumped
-    _one_is_require_ DWORD dwPID; // Target process PID (Set PID or Process Name)
+    _require_ DWORD dwNewFuncSize; // Size of (new) function address to be jumped
     BYTE jmpCode[sizeof(Instruction)];
     _require_ char DLLName[MAX_PATH]; // DLL name of function to be hook
-    _one_is_require_ char ProcessName[MAX_PATH]; // Target process name (Set PID or Process Name)
 } WINAPI_HOOK_DATAA, *PWINAPI_HOOK_DATAA;
 ```
-Set to NULL if PID is not used. 
-
 Wide Char Struct
 ```
-typedef struct _WINAPI_HOOK_DATAW {
+typedef struct _WINAPI_BASIC_HOOK_DATAW 
+{
+    PVOID lpOrigin;
+    PVOID *lpCopyOrigin;
+    PVOID lpNewFunction;
+    PVOID lpParameter;
+    BOOL Parameter;
+    DWORD dwParameterSize;
+    DWORD dwNewFuncSize;
+    WCHAR DLLName[MAX_PATH]; 
+} WINAPI_BASIC_HOOK_DATAW, *PWINAPI_BASIC_HOOK_DATAW;
+```
+```
+typedef struct _WINAPI_HOOK_DATAW
+{
     HANDLE hProcess;
     HMODULE hModule;
     _require_ PVOID lpOrigin; // Address of function to hook
@@ -51,10 +113,8 @@ typedef struct _WINAPI_HOOK_DATAW {
     PVOID lpParameterEx;
     BOOL Parameter; // True is Parameter enabled and False is disable
     DWORD dwParameterSize;
-    _require_ DWORD dwNewFuncSize; Size of (new) function address to be jumped
-    _one_is_require_ DWORD dwPID; // Target process PID (Set PID or Process Name)
+    _require_ DWORD dwNewFuncSize; // Size of (new) function address to be jumped
     BYTE jmpCode[sizeof(Instruction)];
-    _require_ char DLLName[MAX_PATH]; // DLL name of function to be hook
-    _one_is_require_ WCHAR ProcessName[MAX_PATH]; // Target process name (Set PID or Process Name)
+    _require_ WCHAR DLLName[MAX_PATH]; // DLL name of function to be hook
 } WINAPI_HOOK_DATAW, *PWINAPI_HOOK_DATAW;
 ```