The Bible Project provides really helpful visual presentations showing how the Bible is one unified story and points to Jesus all the way through. Check out this 5 minute overview of the whole Bible story!
This detailed breakdown of the Old Testament shows the beauty of each part and the wisdom with which the sections were assembled. TaNaK is what the Jews call the Old Testament – the Torah (Genesis-Deut), the Navi (prophets) and the Ketuvim (writings – poetry).
Read more about the TaNaK here.
And here is the overview of the New Testament: