Regarding advice about being an author; Authors new or long-standing, everyone discovers that publishing and getting published is a very fickle industry. Without authors, mega millions both professionally and recreationally would have to find something else to make money from and entertain themselves.
Authors, true authors, are creative inspirational individuals. People who produce avenues into worlds fictional and true that transport the page turner on a journey of discovery. Fictional works have driven real industry inventions forever. An author’s work is more often than not solitary and for a protracted time, that takes discipline, and self-belief often amidst a flak storm of powers-that-be telling you “NO, you’re wrong, you must conform to our method or find another career buddy”. If it’s fiction, there are worlds to build, characters to evolve, unfolding circumstance and the critical events to pull the reader into the world to be constructed.
Authors come in all shapes sizes and thought methodology. We are the lifeblood of the publishing industry from the extraordinary “how the hell did they think that up” scribes, to the clones who pretend originality off the back of someone else's hard work. No matter what, Stories are why we are here.
So with that in mind;
Middlemen; and there is an ocean of them. All the “how to” guys, the ones who offer leverage supposedly in your advantage. They are the ones who will invite you in often after assessing their bottom line of your work. “What’s in it for me from this guy’s product?” Your book is also your best asset be careful how/what you trade for it. Middlemen, are only interested in you for what you bring. They care for you not in their wake after the inevitable parting of ways. Keep as much control of your product as you can with cards dealt.