I usually just hear about games through word of mouth. For example: I had no idea what Destiny was until i tried it at my friend's house; so then i bought it. Facebook is also good for video game news because a lot of my friends will post things about games.
I don't really go digging for video game news unless it's a game i'm looking forward to; i just havent been into video games like i used to be. But i remember when super smash brothers brawl was waiting to be released, i would check their website every single day for new character previews, stages, etc. I also used to kinda pay attention to the e3 thing .
I would say one excellent way that i come in contact with new indie games is through ps plus... every month they offer 2 free games and i always download them. ALWAYS.