The first and the preeminent concern of any individual or business in online exchanging is security and security which can be done by learning almost the cryptocurrency exchange legal. The five best cryptocurrencies are- 1. Coinbase and Coinbase Professional (for by and large hone), 2. Cash App (fair for tenderfoots), 3. Binance ( best for Altcoins), 4. Biq (best-decentralized Trade).