Coinmarketcap keep me updated about Bitcoin and some very important Altcoin! In addition to coinmarketcap, I use different app to track prices, blockfolio help also with prices of many tokens in my wallet!
Everything that happens in the crypto space is not just about the price alone, as there is still some news that would really help to make some decisions in the market. Personally, I follow some good blogs that dish out cryptocurrency news daily, which I get notified on my mail with the summary of the days news and also make use of Google news to help filter the hot trending news in the space at the particular moment. With respect to prices, blockfolio and tab trader makes the day for me.