A proper Development Environment helps you coding, especially for starters. Notepad++ or Vim are used by a lot of php programmers, because both are free and very powerful.
If you are a Windows User, you should try out Notepad++. Grab your free copy at notepad-plus-plus.org.
Linux users should have vim installed, if not, just install it. Vim can also be used for remote programming, that is useful if you have a Web server running on a Linux distro and want to use it as your test system.
In the next article, you will create your first php script.