The Gospels are four books in the Bible that tell the story of Jesus' life and teaching. They are the original sources of our information about Jesus. It would be worth reading at least one of these.
Grab a Bible
Make sure you have a modern, understandable translation.
Find the index at the front and look for Matthew, Mark, Luke or John. They are actually the first four books of the New Testament i.e. the last third of the Bible.
Read Online
The Bible is online in many places. A well-known site is BibleGateway. Here are the four gospels on BibleGateway
Listen Online
Sites like BibleGateway have an option for listening.
On Your Phone
There are numerous Bible reading/listening apps. To get started, we suggest the YouVersion.
Follow that link and you will also find The Bible App For Kids.
But also to watch the Gospels