To read the novel for free online, you could search on popular search engines with specific keywords. But keep in mind that many free sites may have ads or might not have the complete and accurate version of the book.
I think 'Blaze of Glory' is fiction. It could have elements of creativity and imagination that set it apart from real-life accounts or non-fiction works.
It wasn't Dragon 4. It was the name of a character in the novel " Battle Through the Heavens ". Blazing Sky was the name of a character in Douluo Continent.
Hard to say. You'd need to look into the background and details of 'Been Trail' to determine if it's truly based on real-life events. It could be inspired by reality but still have a lot of creative elements.