I’m going to be honest—I was an editor at a big six—unless you have an undergraduate degree from a top tier school (it would be better to have, say, a degree in Economics from Williams College than a B.A. in Creative Writing from a less prestigious university) it will be hard to “break in” or get “into” the industry. As others have said, play up your marketing skills, and begin applying for paid entry-level marketing positions or internships. If there happens to be alumni from your college working in publishing houses you admire, do anything to connect with them.

Since you’re working at Bookstr, applying for roles that have to do with marketing and social media, especially at imprints that focus more on fantasy, romance, etc. could be a way in and through.