You should be able to simply download the file and run it and it should work perfectly first time. I assume you are using a Windows computer. The software won't work on any other kind.
Having said that, we will be introducing new multi-platform versions of most of our books, free of charge for our full members, in the next couple of weeks.
For now though, I think you should download the file again from scratch in case it did not download properly the first time, and try running it again.
Please do let me know if that helps.
Hugs,
Katie x
Success is the ability to go from one failure to the next without any loss of enthusiasm!