The section of korbanot in the parshiyot of Vayikra and Tzav seems to interrupt the story of the mishkan. It is placed in between the setting up process of the mishkan at the end of Sefer Shemot, and the miluim - the completion of the mishkan in chapter 8 of Sefer Vayikra. Why does the Torah structure the order this way? By exploring the purpose of the mishkan as a representation of the spiritual experience at Mt. Sinai, we can learn about an individual's direct relationship with Hashem, uninhibited by mediators or objects. 

Additional References
Shemot 29, 1-4; 43-45; Shemot 40, 34-35