Where should i invest ?

Ethereum! Casper and the whole POS instead of POW is gonna be revolutionary. If you read about it for 10 minutes (knowing a foundation of crypto) you'll wanna invest in it. Sharding will be good. The casper/constantinople fork alone is gonna make people a lot of money. Ethereum or Ripple. Haven't done much research on Ripple but it has had a lot of attention for a good while and is dirt cheap so not much to lose, sink $20 in it or something :D