There are several good sites and screening tools for the crypto market, coinmarketcap, coingecko, coincheckup and coincap, just to mention a few.
Bitscreener and cryptoscreener are good tools for screening altcoins, but I still find it hard to set my personal strict quantified criteria for my screens.
If you know of a good site that offer more detailed information, for exampel about if and how a coin is premined, and how the coins deals with privacy, please feel free to comment below. :)