The best way is to follow forums, some active telegram groups talking about crypto... etc
It takes a lot of time to be aware of all the crypto news, especially with all the projects out there.

Another way is to check the mainstream blog about crypto, but you'll have the news after everyone. And if you are a big investor, it's bettter to be quickly on a specific market than late.

Buy the rumor, sell the news, like they say.