diff --git a/prototype/src/main/java/org/hso/ecommerce/action/user/ChangeUserAction.java b/prototype/src/main/java/org/hso/ecommerce/action/user/ChangeUserAction.java
deleted file mode 100644
index af9ef9e..0000000
--- a/prototype/src/main/java/org/hso/ecommerce/action/user/ChangeUserAction.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package org.hso.ecommerce.action.user;
-
-import org.hso.ecommerce.entities.user.User;
-
-public class ChangeUserAction {
-
-}
diff --git a/prototype/src/main/java/org/hso/ecommerce/action/user/UpdateUserSettingsAction.java b/prototype/src/main/java/org/hso/ecommerce/action/user/UpdateUserSettingsAction.java
new file mode 100644
index 0000000..57cbfce
--- /dev/null
+++ b/prototype/src/main/java/org/hso/ecommerce/action/user/UpdateUserSettingsAction.java
@@ -0,0 +1,77 @@
+package org.hso.ecommerce.action.user;
+
+import com.sun.xml.bind.v2.TODO;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class UpdateUserSettingsAction {
+
+    private User user;
+    private UserRepository repository;
+
+    public UpdateUserSettingsAction(User user, UserRepository repository){
+        this.user = user;
+        this.repository = repository;
+    }
+
+    public void updateEmail(String newMail){
+        if(newMail.equals("")){
+            //TODO: Errorhandling
+        }else{
+            this.user.email = newMail;
+            this.repository.save(this.user); //TODO: Errorhandling
+        }
+    }
+
+    public void updatePassword(String oldPassword, String password1, String password2){
+        if(this.user.validatePassword(oldPassword))
+        {
+            if(password1.equals(password2)){
+                this.user.setPassword(password1);
+                this.repository.save(this.user);
+            }else{
+                //TODO Errorhandling
+            }
+        }else{
+            //TODO: Errorhandling
+        }
+    }
+
+    public void updateShippingInfo(String salutation, String name, String address){
+        if(salutation.equals("") || name.equals("") || address.equals("")){
+            //TODO: Errorhandling
+        }else{
+            this.user.salutation = salutation;
+            this.user.name = name;
+            this.user.defaultDeliveryAddress.addressString = address;
+            this.repository.save(this.user);
+        }
+    }
+
+    public void updateAdvertisementFlag(boolean advertisementFlag){
+        this.user.isAdvertisementActivated = advertisementFlag; //TODO: Errodhandling
+        this.repository.save(this.user);
+    }
+
+    public void updatePaymentInfo(String creditCardNumber){
+        //TODO: Errorhandling
+        this.user.defaultPayment.creditCardNumber = creditCardNumber;
+        this.repository.save(this.user);
+    }
+
+    public class UpdateResult{
+        public boolean updated;  //if true worked, if false not worked
+        public String errorString;
+
+        public UpdateResult(boolean updated, String errorString){
+            this.updated = updated;
+            this.errorString = errorString;
+        }
+
+        public UpdateResult(boolean updated){
+            this.updated = updated;
+            this.errorString = "";
+        }
+    }
+}
diff --git a/prototype/src/main/java/org/hso/ecommerce/controller/UserController.java b/prototype/src/main/java/org/hso/ecommerce/controller/UserController.java
index 90b11e5..94d7618 100644
--- a/prototype/src/main/java/org/hso/ecommerce/controller/UserController.java
+++ b/prototype/src/main/java/org/hso/ecommerce/controller/UserController.java
@@ -1,5 +1,6 @@
 package org.hso.ecommerce.controller;
 
+import org.hso.ecommerce.action.user.UpdateUserSettingsAction;
 import org.hso.ecommerce.entities.shop.CustomerOrder;
 import org.hso.ecommerce.entities.user.User;
 import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
@@ -46,7 +47,6 @@ public class UserController {
     @GetMapping("/orders/")
     public String userOrdeers(HttpSession session,
                               Model model) {
-
         List<CustomerOrder> orders = customerOrderRepository.getOrdersByUserId((long) session.getAttribute("userId"));
 
         model.addAttribute("orders", orders);
@@ -55,41 +55,65 @@ public class UserController {
     }
 
     @PostMapping("/settings/changeMail")
-    public String changeMail(@RequestParam("email") String email){
+    public String changeMail(HttpSession session,
+                             @RequestParam("email") String email
+    ){
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
 
-        //TODO: implement this
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        cusa.updateEmail(email);
 
         return "user/settings";
     }
 
     @PostMapping("/settings/changePwd")
-    public String changePwd(){
+    public String changePwd(HttpSession session,
+                            @RequestParam("old-password") String oldPassword,
+                            @RequestParam("password1") String password1,
+                            @RequestParam("password2") String password2
+    ){
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
 
-        //TODO: implement this
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        cusa.updatePassword(oldPassword, password1, password2);
 
         return "user/settings";
     }
 
     @PostMapping("/settings/changeAddress")
-    public String changeAddress(){
+    public String changeAddress(HttpSession session,
+                                @RequestParam("salutation") String salutation,
+                                @RequestParam("name") String name,
+                                @RequestParam("address") String address
+    ){
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
 
-        //TODO: implement this
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        cusa.updateShippingInfo(salutation, name, address);
 
         return "user/settings";
     }
 
     @PostMapping("/settings/changeAdSettings")
-    public String changeAdSettings(){
+    public String changeAdSettings(HttpSession session,
+                                   @RequestParam("ad") String ad
+    ){
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
 
-        //TODO: implement this
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        cusa.updateAdvertisementFlag(ad.equals("y"));
 
         return "user/settings";
     }
 
     @PostMapping("/settings/changePaymentInfo")
-    public String changePaymentInfo(){
+    public String changePaymentInfo(HttpSession session,
+                                    @RequestParam("creditCardNumber") String creditCardNumber
+    ){
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
 
-        //TODO: implement this
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        cusa.updatePaymentInfo(creditCardNumber);
 
         return "user/settings";
     }
diff --git a/prototype/src/main/resources/templates/user/settings.html b/prototype/src/main/resources/templates/user/settings.html
index abc5fbb..89e81fb 100644
--- a/prototype/src/main/resources/templates/user/settings.html
+++ b/prototype/src/main/resources/templates/user/settings.html
@@ -33,7 +33,7 @@
             </div>
         </form>
 
-        <form class="detailflex">
+        <form class="detailflex" method="POST" th:action="@{/user/settings/changePwd}">
             <div>
                 <h2> Sicherheit </h2>
             </div>
@@ -42,8 +42,8 @@
                 <input class="full-width" type="password" name="old-password" placeholder="Passwort" id="password"
                        required>
 
-                <label for="password">Neues Passwort</label>
-                <input class="full-width" type="password" name="password" placeholder="Passwort" id="password" required>
+                <label for="password1">Neues Passwort</label>
+                <input class="full-width" type="password" name="password1" placeholder="Passwort" id="password1" required>
                 <label for="password2">Neues Passwort wiederholen</label>
                 <input class="full-width" type="password" name="password2" placeholder="Passwort" id="password2"
                        required>
@@ -51,7 +51,7 @@
             </div>
         </form>
 
-        <form class="detailflex">
+        <form class="detailflex" method="POST" th:action="@{/user/settings/changeAddress}">
             <div>
                 <h2> Rechungs- und Lieferinformation </h2>
             </div>
@@ -91,7 +91,7 @@
             </div>
         </form>
 
-        <form class="detailflex">
+        <form class="detailflex" method="POST" th:action="@{/user/settings/changeAdSettings}">
             <div>
                 <h2> Werbung </h2>
             </div>
@@ -106,13 +106,13 @@
             </div>
         </form>
 
-        <form class="detailflex">
+        <form class="detailflex" method="POST" th:action="@{/user/settings/changePaymentInfo}">
             <div>
                 <h2> Zahlungsinformation</h2>
             </div>
             <div>
                 <div class="input-icon">
-                    <input class="full-width" type="text" name="payment-card" th:value="${user.defaultPayment.creditCardNumber}" required/>
+                    <input class="full-width" type="text" name="creditCardNumber" th:value="${user.defaultPayment.creditCardNumber}" required/>
                     <button> Kreditkartennummer ändern</button>
                 </div>
             </div>