Hi there! I can not really understand why do you want to invest in unstable cryptocurrencies? My advice to you is to study price analysis and charts first, to gain basic knowledge about trading, to find a good and stable trading platform. And what about trading? The best way is to invest in BTC, ETH, and a few more currencies that come next by market cap ( you can find the best price analysis here
https://coinmarketcap.com/ ). After that, find a good and stable platform to trade, like bitstamp, kraken or cryptocoin pro. Good luck!