Coinigy is a similar platform but paper trading is not supported. I don't think the exchange is that important If your goal is to simply learn how to trade. You could go with
HitBtc demo trading or
Bitmex's testnet.
Yep. Those are good sites to learn for free.
But if you wont to learn on binance i would recomend you to deposit minimum amount (10$ is enought) and start trading. Minimum bet on binance is 0.001 btc which is 4$ currently. Even with worst case scenario your learning wont cost you more than few cents. Just start to trade and see on real 10$ if you would loose it or multiply.