@fatfuck Yeah, that's a mistake a lot of people do in the beginning, download too much and get low on ratio, it's easy to happen.
So yeah, if you are below the ratio you can only download Freeleech torrents. My suggestion is get as many freeleechs you can get and leave them seeding as much as you can to recover your ratio. You can also upload stuff and hopefully get some seed bonus that you can convert into Ratio.
Also when you leave stuff seeding for a while you gain seed bonus, which you can convert into ratio, that's how I restored my ratio when I started using the site, all you need to do is click on the seed bonus and it'll open a page explaining it and giving you the options.
So yeah be careful with your ratio, specially in the beginning, now there are so many OF files and they are usually huge those are very dangerous with consuming your ratio, hehe.