The problem isn't that you are unfamiliar with Outlook, (you don't need to know anything about Outlook) but that you are unfamiliar with calling a procedure from your macro.
You don't need to make any changes to the Code I posted. Instead you should call it from your original macro that has the data you want to send. Put the macro in the same folder as your original macro that reads the text box(es) etc and then add a line to the original macro to write the string to the sub e.g.
Code:
Dim strMessage As String
strMessage = UserName & "has scored " & NumberCorrect + NumberCorrect2 + NumberCorrect3 & " as follows:" & vbNewLine & "Q1 - " & NumberCorrect & vbNewLine & "Q2 - " & NumberCorrect2 & vbNewLine & "Q3 - " & NumberCorrect3
Send_As_Mail strTo:="projects@virtualservice.me", _
strSubject:="Quiz Response from" & UserName, _
strMessage:=strMessage
You can use 'Go Advanced' to attach your presentation, or if it exceeds the filesize limitation
, upload the file somewhere e.g. dropbox or onedrive and post the link.