Keeping up with the market definitely helps when investing into altcoins or cryptocurrencies. I looked through many publications and personally I read these ones:
1) Cointelegraph
2) Hacked.com
3) CryptoSlate
4) BitcoinNews
5) CCN
6) Coinspeaker.
Of course, also Twitter and Telegram. What do you guys think? Any recommendations?

Apart from this Coindesk is also one of the old and good source for news and recently ICOdrops telegram announcement channel getting alot of members because they are keenly following ICO space.
ICO rating, Smith and crown are good to read about their research on ICO market.