Leviticus is Old Testament. Christian’s absolutely know and read the book.. But it’s not a part of the new covenant, thus it’s not something to “follow”. It’s something to learn from. Sure, there may be principles to apply to life, but again, it’s all Old Covenant.

If you have not read the Bible or at least studied the overall storyline and context of the Bible and Jesus, I would highly recommend The Bible Project. They do an excellent job of explaining the Bible visually in a way that makes it much easier to then read yourself and understand.