If you're the sort of person who has to get info from a website on how to raise a seed round, then you're probably not in a position to raise money based on just an idea or who you are.
Some people can have solid technical chops, a good idea and a working prototype and not know angels. Not everybody lives in Silicon Valley or some startup hubs. In fact, there is an essay from Paul Graham explaining why some of the best ideas come from outsiders [0].
