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?

Bloomberg, Themerkle but i like this site because the merkle is also giving some reviews about icos and crypto business, a sister from cointelegraph and it is coindesk, Some times the main stream media from US were actively watching the crypto development and it can become a good source too.