hello i want to start trading is better bittrex or binance ?
what type of documents they ask ?
They are both good centralized exchanges. You need a valid identification, international passport, national 🆔, drivers license.
Binance allows a minimum daily withdrawal without verification.
i think i will trade like 1000-2000$ every few days
i want to buy 1000 usdt$ of BTC when price go low , and sell for 1050 usdt$ when go up is this possible ?
The market is unpredictable and you can expect such drops and pumps in a week, or regularly.
You can try arbitrage trading, this means you would have to use various exchanges.