Please Help i am a noobie ! Adobe Flash Builder premium

Question

Heelo Everyone , recently , I downloaded the latest version of Flash builder . i want to know how i can enter the codes which would be executed when i click the button i have created . For example can someone tell me the code to display a label , a button or how to change the state or view when that button is clicked . I am developing a desktop application . Can someone please help me to change the default background color or even insert my own background image. I have reache it till here. please Help me to develop the reqquired application . I know that these are the very basics so i cant develop further without it. I have currently reached till here and have completely understood the matter till here . please dont be evil and copy the code for your own project. 
My current progress:-
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                       xmlns:s="library://ns.adobe.com/flex/spark"
                       xmlns:mx="library://ns.adobe.com/flex/mx"
                       width="800" height="600"
                       minWidth="800" minHeight="600"
                       maxWidth="800" maxHeight="600"
                        title="XYZ">
    <fx:Style source="XYZ.css"/>
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <s:states>
        <s:State name="splash"/>
        <s:State name="mainmenu"/>
        <s:State name="options"/>
        <s:State name="XYZ"/>
    </s:states>
    <fx:Script>
        <![CDATA[
            protected function continueBtn_clickHandler(event:MouseEvent):void
                // TODO Auto-generated method stub
        ]]>
    </fx:Script>
    <s:Label left="274" right="269" top="83" bottom="274" fontSize="36" horizontalCenter="2"
             text="XYZ&#xd;&#xd;XYZ:-" verticalCenter="-96" includeIn="splash"/>
    <s:Button id="continueBtn" x="305" y="431" label="Click to Continue and Play the game " includeIn="splash" click="continueBtn_clickHandler(event)/>
    <s:Label x="274" y="322" color="#00FF48" fontSize="36" text="Traffic" includeIn="splash"/>
    <s:Label x="416" y="322" color="#FF0030" fontSize="36" text="Manager" includeIn="splash"/>
</s:WindowedApplication>

Answer 1

So you're completely new but you're worried someone
will use your code??
  I'll try to answer the immediate questions but you really should sit through some tutorials as suggested.
   Displaying a label:   you can just add this in MXML and set the visibility=false, and on need address the id of the label to set the visibility to true.
   (eg)  <mx:Label id="lbl1" x="179" y="113" text="Label" visible="false"/>   then when you need to show it in AS you can use:  lbl1.visible=true;  and it will display where you have it.  You can also create the label on the fly in AS and position it.
"Can someone please help me to change the default background color or even insert my own background image."
Not sure where you are trying to set this but the easiest way is to use the Design View tab, select the component and then go down the list on Flex properties on the right in Flec Development Perspective.
or you can manually find your component and add backgroundColor="theColorYouWant
" in the list of attributes
background image:
Just put this under the <mx:Application     >  tag
<mx:backgroundImage>@Embed(source='//relative path to image in your project')</mx:backgroundImage>
"a button or how to change the state or view when that button is clicked"
click="{currentState='options'}  add something this to the attributes of the MXML button component. 'options' being the name of the state you want to switch to.  If your base state is not named use currentState=' ' to switch to it.
Once you've sat through the tutorials.
Do a google search for flexblogs and there are some good ones that show examples on how to do some basic to advanced things, it is very useful for the resourceful newcomer to flex.
Good luck with your project.