HTML Editors are programs that are used to help you design web pages. They make shortcuts for you, and basically make things easier. However, I recommend you create HTML documents using Notepad or Wordpad ....as you will learn something in the process.
Since HTML Editors can be costly, and they prevent you from actually learning HTML, it is best that you don't use these programs until after you know HTML. If you want to use HTML editors anyway, or if you think you might want to use one after you have learned HTML, choose your software wisely.