1. I'm new to AddOns but i'm a fairly skilled programmer and i am having a lot of problems with creating this first simple addon.

     <Ui xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.blizzard.com/wow/ui/">
        <Script file="Frame.lua" />
        <Frame name="Frame1">
            <Size>
                <AbsDimension x="242" y="125" />
            </Size>
            <Anchors>
                <Anchor point="TOPLEFT">
                    <Offset x="174" y="-53" />
                </Anchor>
            </Anchors>
            <Backdrop bgFile="Interface\DialogFrame\UI-DialogBox-Background" edgeFile="Interface\DialogFrame\UI-DialogBox-Border" tile="true">
                <BackgroundInsets>
                    <AbsInset left="11" right="12" top="12" bottom="11" />
                </BackgroundInsets>
                <TileSize>
                    <AbsValue val="32" />
                </TileSize>
                <EdgeSize>
                    <AbsValue val="32" />
                </EdgeSize>
            </Backdrop>
            <Scripts>
                <OnLoad>Frame1_OnLoad();</OnLoad>
                <OnEvent>Frame1_OnEvent();</OnEvent>
            </Scripts>
        </Frame>
     </Ui>
    

    Lua

     function Frame1_OnLoad()
        print("Target Name Addon!");
        this:RegisterEvent("PLAYER_TARGET_CHANGED");
        this:RegisterEvent("CHAT_MSG_MONEY");
     end
    
     function Frame1_OnEvent()
        if (event == "PLAYER_TARGET_CHANGED") then
            print("Hello " .. UnitName("target") .. "!");
        end
    
        print("Hello world!");
    
     end
    

    The problem is that my events do not trigger at all. I've tried everything i can think of and they do not. Could someone point me into the right direction?

    I'm new to AddOns but i'm a fairly skilled programmer and i am having a lot of problems with creating this first simple addon.

    There's a few problems and bad practices being used in this.. is there a reason you're not using the examples and styles that I present in the book? If you follow that style, you won't go wrong.

     <Ui xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.blizzard.com/wow/ui/">
      <Script file="Frame.lua" />
    

    There's no need to load the lua script here, you should do it in the .toc file instead just so you only have one place to look and see when a file is being loaded.

      <Frame name="Frame1">
          <Size>
              <AbsDimension x="242" y="125" />
          </Size>
          <Anchors>
              <Anchor point="TOPLEFT">
                  <Offset x="174" y="-53" />
              </Anchor>
          </Anchors>
          <Backdrop bgFile="Interface\DialogFrame\UI-DialogBox-Background" edgeFile="Interface\DialogFrame\UI-DialogBox-Border" tile="true">
              <BackgroundInsets>
                  <AbsInset left="11" right="12" top="12" bottom="11" />
              </BackgroundInsets>
              <TileSize>
                  <AbsValue val="32" />
              </TileSize>
              <EdgeSize>
                  <AbsValue val="32" />
              </EdgeSize>
          </Backdrop>
          <Scripts>
              <OnLoad>Frame1_OnLoad();</OnLoad>
    

    This should be changed to <OnLoad>Frame1_OnLoad(self)</OnLoad>, since you need to pass the argument to the frame handler to your sub-function.

              <OnEvent>Frame1_OnEvent();</OnEvent>
    

    Same issue here, except the signature is more complicated. This needs to be <OnEvent>Frame1_OnEvent(self, event, ...)</OnEvent>.

          </Scripts>
      </Frame>
     </Ui>
    

    Lua

     function Frame1_OnLoad()
      print("Target Name Addon!");
      this:RegisterEvent("PLAYER_TARGET_CHANGED");
      this:RegisterEvent("CHAT_MSG_MONEY");
     end
    

    The global variable this no longer exists and hasn't since WoTLK. You are almost certainly getting a Lua error on one of these two lines telling you that this is a nil value. If not, you should enabled Lua errors (Interface Options -> Help -> Display Lua Errors). In order to make this work, you need to change the signature to match what is expected for OnLoads, i.e. make the following changes:

      function Frame1_OnLoad(self)
        print("Target Name Addon!");
        self:RegisterEvent("PLAYER_TARGET_CHANGED");
        self:RegisterEvent("CHAT_MSG_MONEY");
      end
    

    You've got the same problem in this event function, it needs to be something like this:

     function Frame1_OnEvent()
      if (event == "PLAYER_TARGET_CHANGED") then
          print("Hello " .. UnitName("target") .. "!");
      end
      
      print("Hello world!");
     
     end
    
      function Frame1_OnEvent(self, event, ...)
        if (event == "PLAYER_TARGET_CHANGED") then
            print("Hello " .. UnitName("target") .. "!");
        end
    
        print("Hello world!");
    
      end
    

    The problem is that my events do not trigger at all. I've tried everything i can think of and they do not. Could someone point me into the right direction?

    The issue is actually before that, but hopefully this points you in the right direction.