Yes, this software is exactly what you need to get started and it will guide you by offering various information based on what you choose to create. The problem rises in compatibility. The software is available only for Windows PCs. This means that Mac is out of the question. However, before starting to use it, make sure to read the forums on the official website. It's a great way to find information on how to make it work efficiently and accurate.
As for the compatibility problem, install Windows through Bootcamp in your Mac, and then install Simatic WinCC.