A personal website is a group of web pages that someone creates about themselves. It basically contains things that are personal. It doesn't have to be about you, and it doesn't have to contain personal information but it does need to be personal.
A personal website must exhibit content that tells your readers about your thoughts, ideas, interests, hobbies, family, friends, feelings, or something you feel strongly about. Online diaries, self-written books, poems, family, pets, or a page about your favorite topics such as a TV show, a sport, or a hobby are examples of things that could go on your personal website. Or, it could be a page written to help others with topics like health, or how to's on just about anything.