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https://coinmarketcap.com is a good place to start. You can see which currencies have the biggest support in terms of price and volume. You can also find links to official pages of the currencies and social sites where the community discusses things. It can be challenging to find a good currency, but the time you spend understanding what makes a good currency is probably worth it once you decide to invest. For me personally the development team is the most important indicator of a good currency, but that is just my opinion. :)

Awesome thank you!

So if iwanted to invest in a new crypto, like EOS how would i go about it?

You would probably have to buy bitcoin and then buy EOS with that. You can also find the exchanges that have the currency from coinmarketcap.com

Coin Marketplace

STEEM 0.17
TRX 0.16
JST 0.029
BTC 61184.91
ETH 2402.84
USDT 1.00
SBD 2.64