diff --git a/README.md b/README.md
index 8a46c14..4aab674 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,11 @@
-# GoogleAppsScript
\ No newline at end of file
+# GoogleAppsScript
+
+#GDG MEETUP REGISTRATION AUTOMATION
+
+1).Create google form and share the registration link to the users.
+2).Once registration get closed automatic confirmation mail will send to the registered users.
+3).Notify registered users before sometimes event gets started.
+4).Also send the detail agent to registered users before event starts via automatic mail.
+5).Send thank you mail to users after event gets finished.
+6).Generate certificate for each users who are all participated and send automatic mail with attached certificate.
+
diff --git a/gdg-event-reg.gs b/gdg-event-reg.gs
new file mode 100644
index 0000000..fdccca8
--- /dev/null
+++ b/gdg-event-reg.gs
@@ -0,0 +1,53 @@
+var sheetID = "add your google sheet ID having registered users";
+var reg =   SpreadsheetApp.openById(sheetID).getSheetByName("reg");
+var agenta =   SpreadsheetApp.openById(sheetID).getSheetByName("agenta");
+
+function trigger() {
+  var regUsers=[];
+  var messages=[];
+  regUsers=getSheetData(reg);
+  messages=getSheetData(agenta);
+  sendEmailtoPartcipants(regUsers,messages);
+}
+
+function sendEmailtoPartcipants(regUsers,messages){
+  for(var i=0;i<regUsers.length;i++){
+   sendEmail(regUsers[i], 'GDG AppScript hackathon', messages[0],'add your google sheet id having messages'); 
+  }
+}
+
+function sendEmail(to,body,msg,attid){
+  var pdf = DriveApp.getFileById("add your google document id").getAs('application/pdf').getBytes();
+  var attach = {fileName:'GDG_Certificate.pdf',content:pdf, mimeType:'application/pdf'};
+  GmailApp.sendEmail(to,body,msg, {
+    attachments: [attach],
+    name: 'HackerEarth'
+  }); 
+}
+
+function getSheetData(sheetname){
+  var sheetData=[];
+  var range = sheetname.getDataRange();
+  var values = range.getValues();
+  for (var i = 0; i < values.length; i++) {
+    for (var j = 0; j < values[i].length; j++) {
+      if (values[i][j]) {
+        sheetData.push(values[i][j]);
+      }
+    }
+  }
+  return sheetData;
+}
+
+function getMessages(){
+ var range = agenta.getDataRange();
+ var values = range.getValues();
+  for (var i = 0; i < values.length; i++) {
+   for (var j = 0; j < values[i].length; j++) {
+     if (values[i][j]) {
+       regUsers.push(values[i][j]);
+     }
+   }
+  }
+}
+