Leviticus 1 starts out with instructions on bringing offerings to the Lord.
:3 states to offer it of your own voluntary will
God still requires that of us doesn't He? Anything we do for the Lord, if it is not of our own voluntary will is a foul smell in the nostrils of God. An offering can't be forced anymore then submission can be forced. You must willingly submit to a husband. Now I know that you can physically make someone submit, that is not what I mean. I mean the submission that comes from the heart. Which is what God wants from us.
2:13 All meat offerings must be flavored with salt.
Have you ever tried something cooked with out any salt? Not very good is it? God wanted the sacrifice to be good, actually He wanted it to be the best it could be.
Do you ( I ) always give our best to God? Sadly I don't. But I am working on it.
Chapter 8 deals with the consecration of Aaron and his sons.
Chapter 10 tells of 2 of Aarons sons offering strange fire before the Lord that they hadn't been told to do. The Lord sent out fire and devoured them. God doesn't tolerate sin.
Chapter 11 deals with dietary things. Later in the new testament they are told they can eat these things.
I think Chapter 11 was a test to see if the people would obey, as in the past they had disobeyed commandments right away. Remember the golden calf?
Chapter 13 deals with childbirth cleansing and leprosy
Chapter 14 continues with leprosy