We can classify offerings in several different ways: You can classify them by what is offered, so there are offerings of bulls, sheep, goats, grain, unleavened bread, meal, oil, and wine. You can classify them by what happens: There are burnt offerings, where the whole gift goes up as smoke. There are offerings where part is "turned to smoke" and part is eaten by the priests, and wave offerings where the whole thing goes to the priests after being waved before the altar. These can be thought of as a system of taxes on the people to support the priesthood. There are offerings where part goes up in smoke, part goes to the priests, and part goes home with the person who offered it -- for dinner. You can classify offerings by why they are made: There are daily offerings, special Sabbath offerings, festival offerings, peace offereings, offerings of Thanksgiving, offerings marking the return of someone to ritual purity, and sin offerings.
They didn't. Burnt offerings (the Olah in Leviticus ch.1) are always burnt. The offerings that were cooked and eaten were a different kind (the shelamim), found in Leviticus ch.3.
Because if the offering were not prepared as commanded in Leviticus Chapter 1 , the sacrifice will not be pleasing to God and will be rejected,
leviticus
It was offered up with each of the offerings in the Temple (Leviticus ch.2).
It depends on the type of offering. The only common offering that was completely consumed by fire was the Olah (burnt offering; Leviticus ch.1).The sin-offering and guilt-offering (Chatat, Asham) were eaten by the Kohanim (Leviticus ch.4,5, 6 and 7), except in rare cases.The Shelamim-offerings (Leviticus ch.3) were eaten by the person who offered it, together with whomever he wished to share it (Leviticus ch.7). The Shelamim was the most common of the offerings (it is somewhat inaccurately translated as a "peace" offering). It included several types of offerings: the regular Shelamim, the Hagigah, the Pesach, the Todah and the Maaser.See also:http://judaism.answers.com/jewish-history/the-sacrifices-in-the-temple
Leviticus 19:18.
The mention of warts concerns blemishes of animals making them unfit for offerings (Lev. 22:22). It doesn't speak about stopping warts.
Leviticus 16:29 and 23:27
The word "clean" is found many, many times in the Bible. Scriptural references (at least in the NIV version) that use the word "clean" can mostly be found in the book of Leviticus. Leviticus is the third book of the Old Testament.
"Tattoo" can be found once in the NIV in Leviticus 19:28... and not at all in the KJV.
The only thing that was obligatory for him was performing the service on Yom Kippur (Leviticus ch.16). Aside from that, he could offer offerings if he wanted to.
Exodus, mostly. His laws and the census of the twelve tribes are found in Leviticus, Numbers, and Deuteronomy.