Rick Riordan's works are still a fairly new as far as books go, so they are not yet available in the public domain. This means that they cannot be read for free online legally. However, they can be purchased in e-book form. See the related link and questions below.
mythology
Rick Riordan like to write about mythology (Percy Jackson and The Olympians series's) and mystery (39 clues The maze of Bones). I've read all of these books by the author of my FAVORITE books. All my friends read them and LOVE them as much as I do.
read it and find out
If you go to Rick Riordan's site by simply googling (or binging I guess) Rick Riordan and go to the link that says "Welcome to the Online World of Rick Riordan!" Simply click there. If you go to the Kane Chronicles section you'll find Throne of Fire and if you go to the end of the summary (or whatever it is) on that page it'll say that you can read the first two chapters on some Disney website.
It is illegal and unethical to read books for free online if they are not authorized for free distribution by the author or publisher. Consider supporting the author and purchasing a legal copy of the book to enjoy the story legally.
Why don't you read and find out
read the end of the book and then you'll know
There is no public information available to confirm whether Rick Riordan reads fanfiction based on his books. However, many authors choose not to read fanfiction to avoid any legal or creative conflicts that may arise.
Rick Riordan like to write about mythology (Percy Jackson and The Olympians series's) and mystery (39 clues The maze of Bones). I've read all of these books by the author of my FAVORITE books. All my friends read them and LOVE them as much as I do.
There is no current public information or evidence to suggest that Rick Riordan is facing any legal action or lawsuits. An author and educator known for his young adult fiction series based on mythology, Riordan has a successful career and positive reputation in the literary world.
Probably Rick Riordan's editor or a proof-reader.
Athena did not have any children unless you read Percy Jackson: The Lightning Thief by Rick Riordan- she has kids in that...Demigod kids