Yes, they will take advantage of you, speaking from experience. Right after graduating I was paid ~750eu/mo for 60+hrs a week as a frontend dev in a first world country. It barely covered my rent. I had to borrow money from my parents to pay for food.
I lasted 1 year at that first company. My next job, a small but awesome agency, took me -someone with an arts degree, 1 year frontend dev experience- as a junior full-stack developer and gave me the chance and challenges to develop myself further. Now, a few years later, I earn a relatively good salary as a JS consultant at another company.
Being taking advantage of (financially) can have the effect of developing a thicker skin. You won't let it happen again after that. That's growth in my opinion.
It doesn't take the fact away that you can earn just enough to survive while building up professional development experience, which you can add to your CV. It's tough, but it can be done! Grab any chance to gain professional experience.
Also, try to stay creative! I know, it is super hard when you're broke / low on funds, there is no freedom in your head to think about anything else then surviving day to day or month to month.
The comment above about contributing to open-source is really good. There are lots of projects that would love more contributors. Also it's a nice way to expand your network.
And please, create a stunning personal website. Do some research into graphic design and try to create a professional but creative portfolio site. Next to your Github account, this is your business card.