Leviticus 25 - God created man to have dominion over the earth. God established rules for agriculture that were extremely practical and helpful to assure the best use of the land. One of those was directing each land owner to plant and harvest crops six years in a row but to let the land rest for the seventh year. This would allow the land to replenish much needed nutrients for future harvests. Also, God wanted every 49th year to be a Year of Jubilee when debts would be canceled and slaves could go back to their families. God also shows His concern that the poor of the land would be cared for.
Leviticus 26 - This chapter is so much like Deuteronomy 28. Both chapters give a clear description of the blessings Israel would enjoy if they obeyed God's clear instructions, and the cursed life they would have if they disobeyed Him. When you look over the blessings you can't help but wonder why would anyone disobey God and miss receiving all that He would love to give!
Leviticus 27 - Making vows and keeping promises is very important to God, especially when those promises are made to Him! We should be very careful with our attempts to "please God" by making commitments we may find difficult to fulfill.
Now that you have read through Leviticus I hope you've realized that it doesn't just speak of sacrifices and rituals. It does speak of God's holiness and His desire that His people live holy lives in all they do.