There are not many editors for haXe, but still there are some that you should know of. Although I do suggest that you look at these because they can help you increase productivity. I do think that it's also important in the beginning to use the haXe compiler (that is, the
haxe command) on your own to understand how it works and how it is used. You'll get more and more comfortable as you go through the examples.
The FlashDevelop IDE supports haXe projects. This is certainly the most advanced haXe code editor on Windows at the time of writing and also, it is an open source software.
FlashDevelop supports auto-completion, project management, syntax highlighting, and compilation rights from the IDE.
You can download ...