Guys I want to invest 200k to the altcoins. But I have no idea when and which ones should I buy. Any suggestions?
You should probably go to coinmarketcap.com and research each individual coin and make a list of potential investments.
Then cut the list further down. 200k is a lot of money to bleed into alts. I wish you best of luck. Im about to go bullish into darico.io ICO, that coin is backed by BTC ETH and physical gold.