it means if i invest bitcoin just send to my perosonal bitcoin address that i entered? but how can you control my bitcion, because you don't have my private key!

I have a question, when i registered NVO account, just send the coin to the coin's address of each escrow diretly? if so, how do u know how many i sent and i going to send several coins in it.

I registered NVO account and submited my bitcoin address,also get many altcoins private keys, but i have no idea for the next, does anybody can help me！ by the way to tell me the altcoins private keys for what？