Hi there, I am glad that you are here. By now if you have heard about Bitcoin or any other cryptocurrency such as Ethereum or Lite coin or Bitcoin Cash, then you must have heard about Coinbase , Kraken and Gemini. Now I understand you are here to find out the place / site where you can go to buy crypto for 0 commission. Coinbase or those other exchanges where you can buy crypto for Fiat charge you a lot as commission. So my advise, do not buy from those sites since you have an better option.
Robinhood provides a great platform to buy US stocks for zero brokerage. Robinhood is extending the same service for bitcoin, lite coin and some other cryptoes. You can download the robinhood app on your smart phone and then sign up and start buying cryptoes.
If you want to know which crypto to start with, my suggestion would be to start with Bitcoin. And no you do not need to buy a whole Bitcoin, you can start investing for as low ass $10. You get a fraction of a whole Bitcoin for now.
Feel free to post any question below, I will get back to you as soon as possible.