Following specific Twitter accounts, for sure. The best source for information, news, rumors, etc. It's useful for both trading and investing. BitcoinTalk (not much of information recently, though). Reddit, Everything is cooked and baked there. Sometimes Coindesk, but I don't take their words for sure they sometimes just hype and shill.
I too prefer Twitter account to get updates regarding bitcoin, altcoins and the the entire use of blockchain into various fields. Other than this coindesk, cryptonews.net and ccn.la is preferred for updates. As there is not much availability of channels to provide updates planning to create one with good contents and regular updates.