Use “according to” to talk about information from another source. It’s a different way to say “(someone or something) says that….”
According to the event page, it starts at 8.
It’s really hit-and-miss, according to the online reviews.
You can also say “according to (someone)”:
According to Leslie, we were supposed to turn them in yesterday.
There’s no one signed up yet, according to John.
Notice in the last sentence that the phrase can also be at the end.