This is a new section. The “lessons from the wilderness” reached a climax in the last two chapters. We had the reveal of the command to love God with all your heart, and a massive answer to the question “why”: because of his goodness in saving them from Egypt.
Now we start a section that looks forward more exclusively at how they will love God. This chapter is about the places, the temple, where they must go to offer sacrifices. Also the rules about meat, not eating the blood of the animals out of respect for their God given life.
I like how is a very practical approach to the command to love God. Canaan is literally full of other Gods. Loving God remains a series of moment to moment choices.