This is how I'd go about getting my first full-time job at a company as a social media manager or content creator.
Key ideas:
No credentials, just results.
Show your work, don't just send a resume.
Build relationships, because even if you're not a good fit now, you'll still be considered for opportunities in the future.
Job Listings Website: https://www.theladders.com/
Listen to the Creators Are Brands podcast. (http://www.creatorsarebrands.com)
See me yelling about creative stuff on Instagram. http://www.instagram.com/bonusfootage