In general, each tutorial will use a separate folder - i.e. workspace - to store its files. When building and compiling code in multiple languages, you should take care to organize your work. Depending on how you have FlowCoder configured, mixing files between projects can corrupt and damage them.
Always create or open a working folder for each tutorial. Within this folder you might create additional folders to hold all the files that you create and use while you work.
Within your working folder, or on the Windows desktop right click and select New/Folder. Once you see the new folder icon appear, type a meaningful name that helps identify its content such as Tutorial1. There are other ways to create a folder in Windows so refer to your Windows User's Guide for additional methods.