diff --git a/src/Client/src/main/java/greenify/client/controller/RegisterWindowController.java b/src/Client/src/main/java/greenify/client/controller/RegisterWindowController.java
index b8e1ff2..1ebeac8 100644
--- a/src/Client/src/main/java/greenify/client/controller/RegisterWindowController.java
+++ b/src/Client/src/main/java/greenify/client/controller/RegisterWindowController.java
@@ -235,7 +235,7 @@ public class RegisterWindowController {
         //close the register window after the user has entered all the credentials
         Stage current = (Stage) owner;
         current.close();
-
+        
         Parent calc = Application.load(this.getClass().getClassLoader()
                 .getResource("fxml/FirstCalculator.fxml"));
         Scene scene = new Scene(calc);
diff --git a/src/Client/src/main/resources/fxml/FirstCalculator.fxml b/src/Client/src/main/resources/fxml/FirstCalculator.fxml
index 2fea111..760ebf5 100644
--- a/src/Client/src/main/resources/fxml/FirstCalculator.fxml
+++ b/src/Client/src/main/resources/fxml/FirstCalculator.fxml
@@ -1,13 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import javafx.scene.shape.*?>
-<?import javafx.geometry.*?>
-<?import javafx.scene.control.*?>
-<?import javafx.scene.image.*?>
-<?import javafx.scene.layout.*?>
-<?import javafx.scene.text.*?>
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.CheckBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.ScrollPane?>
+<?import javafx.scene.control.Slider?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.image.Image?>
+<?import javafx.scene.image.ImageView?>
+<?import javafx.scene.layout.AnchorPane?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.shape.Line?>
+<?import javafx.scene.text.Font?>
+<?import javafx.scene.text.Text?>
 
-<AnchorPane prefHeight="703.0" prefWidth="820.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="greenify.client.controller.RegisterWindowController">
+<AnchorPane prefHeight="703.0" prefWidth="820.0" xmlns="http://javafx.com/javafx/8.0.172-ea" xmlns:fx="http://javafx.com/fxml/1" fx:controller="greenify.client.controller.RegisterWindowController">
     <children>
         <AnchorPane fx:id="calculatorTabs" prefHeight="92.0" prefWidth="820.0" style="-fx-background-color: #677069;">
             <children>
@@ -146,6 +154,12 @@
                 </Label>
                 <Button fx:id="getStartedNextButton" layoutX="383.0" layoutY="406.0" mnemonicParsing="false" onAction="#displayTravel" styleClass="nextButton" text="Next" />
                 <Line endX="79.0" layoutX="147.0" layoutY="14.0" stroke="#545b54" />
+            <Text layoutX="296.0" layoutY="51.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Welcome to Greenify!">
+               <font>
+                  <Font name="System Bold" size="22.0" />
+               </font>
+            </Text>
+            <Text layoutX="15.0" layoutY="459.0" strokeType="OUTSIDE" strokeWidth="0.0" text="This application will help you decrease your CO2-footprint. In the next screen, you will be asked to fill in certain things, like your yearly energy costs. These values will help us calculate your CO2-footprint. Warning: If you don't fill anything in, the calculator will use a default value based on averages, so if you want a value to be zero, please fill in zero. After that, you'll be able to see your score and compare your footprint to those of your friends. Let's go green and save the planet!" textAlignment="CENTER" wrappingWidth="714.0" />
             </children></AnchorPane>
         <AnchorPane fx:id="travelPane" layoutY="85.0" prefHeight="618.0" prefWidth="820.0" visible="false">
             <children>
diff --git a/src/Server/src/main/java/greenify/server/service/AchievementService.java b/src/Server/src/main/java/greenify/server/service/AchievementService.java
index 72db4fc..cc59bdc 100644
--- a/src/Server/src/main/java/greenify/server/service/AchievementService.java
+++ b/src/Server/src/main/java/greenify/server/service/AchievementService.java
@@ -78,8 +78,8 @@ public class AchievementService {
      * @param user user for whom achiev6 changes
      */
     public void achieveLetItShine(User user) {
-        int solar_panels = Integer.parseInt(user.getExtraInputs().get("solar_panels"));
-        if (solar_panels >= 2) {
+        int solarPanels = Integer.parseInt(user.getExtraInputs().get("solar_panels"));
+        if (solarPanels >= 2) {
             userService.setAchievement(user.getName(), "Let it shine", true);
         }
     }
diff --git a/src/Server/src/main/java/greenify/server/service/CalculatorService.java b/src/Server/src/main/java/greenify/server/service/CalculatorService.java
index 68cf414..e0d3d2e 100644
--- a/src/Server/src/main/java/greenify/server/service/CalculatorService.java
+++ b/src/Server/src/main/java/greenify/server/service/CalculatorService.java
@@ -110,6 +110,11 @@ public class CalculatorService {
         user.setFootPrintInputs(inputs);
     }
 
+    /**
+     * Gets the result of the CO2-calculation from the CoolClimate website
+     * @param map results that the user filled in
+     * @return the results from the website.
+     */
     public Map<String, String> getResults(Map<String, String> map) {
         HttpHeaders headers = new HttpHeaders();
         headers.set("accept", MediaType.APPLICATION_JSON_VALUE);