Regarding the "open source, if you like it buy me a coffee" thing, I am not against that. By saying "I'd like to turn this into a product", I don't rule that out. I already mentioned that in another comment.
To me at this stage it's more about making a living out of something I love doing rather than becoming the next big tycoon.
To me at this stage it's more about making a living out of something I love doing rather than becoming the next big tycoon.