How do I file taxes as an independent contractor? What forms do I need?

So I was hired as an independent contractor in February and was unaware that I needed to file my taxes quarterly. What forms do I need? Can I use Turbotax? Are there any guides online? I keep getting different answers and I am looking for some straight answers. I get paid on the 15th and 30th of every month. I... show more So I was hired as an independent contractor in February and was unaware that I needed to file my taxes quarterly. What forms do I need? Can I use Turbotax? Are there any guides online? I keep getting different answers and I am looking for some straight answers. I get paid on the 15th and 30th of every month. I think there is a penalty for missing the April 15th deadline, how will I access that?

Please dumb it down for me as much as possible :)

Many thanks
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