Garry Kay's Blog: How does this work?

Jagger Black is a high-energy, fast-moving tale of a dying man in Detroit who forces his victims to kill each other in bizarre tests of friendship and morality. It's free now until March 24, 2020. Thanks for downloading x mybook.to/JaggerBlack.

Does anyone know what blogs are for and why anybody would read them? I really am that ignorant and would appreciate any ideas. Thanks