Second thing, that I read something that every crypto has different blockchains, and when I wanna send one of my cryptos to my wallet, somehow it can be loss, because Ethereum can not be send to Bitcoin wallet? In this I totally confused, where I can send, where I can not, how can I lose my coins.
Thanks, best all.
That's right. Transactions must be done for every specific coin. Bitcoin for bitcoin, Ethereum for Ethereum. Take note of that. Always check the addresses and crypto that you're sending. You send Ethereum to an Ethereum address. Litecoin to Litecoin and so on.
To explain further, op you just have to bear in mind that all the cryptocurrencies you may want to buy can be stored within the exchange where you bought them but this is so risky. So the best option is to store them by yourself. Each token has its own blockchain network (expect for smart-contracts) so you have to use many app to do so. There are some good multicurrency wallets, i advice you to try TrustWallet which is a wallet lunched by Binance itself, you can trust it.