Techmeme - great for big industry news, like product launches, acquisitions, prominent hires. You get won’t Github projects on it, it’s not really for that
Hackernews - Relatively excellent content and comments on tech. events and lots of code projects are showcased and discussed
Twitter - Use it to follow a bunch of ML/AI people. There’s often too much non-technical fluff though, so I’ve removed it off my phone and only check occasionally.