Well if you want to invest on cryptocurrencies you must learn the risks of losing money here and how to deal with it.
What risk you have invested on the cryptocurrencies which are all already listed in the market. There are few cheap altcoins does not have potential to bump that may go cheaper or vanish out in the market for sure.
If you want to invest on 1000 USD you may manipulate all the money you have in various cryptos.
I suggest to chosoe the bitcoin, ethereum, litecoin, NEO and Monero. You will be able to get the few coins for this amount all the coins rate is higher in the market.