I want to start writing apps for Windows Phone 8 and above. I went then to their website and wanted to register a developer account. But my options are to register as an Individual ($19) and as a Corporation (above $100). I don't want to spend any money on this. I just want to try it. Is there a way to get those IDs (Publisher GUID and App ID) without publishing my app in the store thus without spending any money?
Edit: I AM a student (in Bulgaria) but I use elementaryOS (Linux-based) as my OS, therefore I cannot install Visual Studio. Can @Thomas tell me the exact process of signing up for a free developer account?