My Advice , dont put your eggs in one basket , diversified your activity ,get better experience in other field , i suggest to try affiliate business and promote it using reliable advertising network, if you know what are you doing and do small research for choosing the right product and good network then you can double this money .
Yes, so if OP has $1000 each month to enter in crypto currency, i would suggest him to buy different coin each month with 1000$ and hold them for long term. While choosing the coins, you can select from from 10 or 15 coins as these the coins which have more volume and are listed on good exchanges.