Note: The Shabbos Torah Reading is divided into 7 sections. Each section is called an Aliya [literally: Go up] since for each Aliya, one person "goes up" to make a bracha [blessing] on the Torah Reading.
1st Aliya: Additional instructions regarding the Olah - ascent offering, and the Mincha - meal offering are detailed.
2nd Aliya: The special meal offering of the Kohain Gadol and the special inaugural meal offering of the regular Kohain is described. This was the same offering in both cases; however, the Kohain Gadol brought his offering every day while the regular Kohain did so only on the day of his inauguration into the service of the Bais Hamikdash. Additional laws of the sin offering, and the guilt offering are detailed.
3rd Aliya: Additional laws of the peace offering are detailed along with those portions of the offering that must be shared with the Kohain.
4th, 5th, 6th, & 7th Aliyot: The remainder of the Parsha describes the first seven days of the inaugural process for Aharon and his four sons. Moshe functioned as the Kohain Gadol to officiate over the inaugural process, and Aharon and his sons were forbidden to leave the Mishkan the entire time.
Summary of The Haftorah:
Malachi Chapter 3
This week's Haftorah is from Malachi, chapter 3. The Navi proclaims to the nation that the ultimate redemption awaits. The time will come when the evil and the arrogant will be destroyed and the righteous will prevail.
The relationship of the Haftorah to this week is because it is the Shabbos before Pesach. Just as the nation was redeemed from Mitzrayim 3310 years ago, so too will Eliyahu Hanavi herald the coming of Mashiach.
Pasuk 22 underscores the basis for all prophets and prophesies. The only true Navi is the one who "remembers the Torah of Moshe, Hashem's servant". Any Navi that contradicts Moshe's Torah is by definition a "false prophet". Many false mashiach's have arisen throughout history. The only true Mashiach will be the one heralded by Eliyahu himself (a Kohain, by the way)as he proclaims the "coming of the great and awesome day of G-d".
This week is also known as Shabbos HaGadol - the great Shabbos. Traditionally the Rav of the Shul delivers an afternoon drasha that is intended to review the laws of Pesach as well as inspire the community to ready themselves for the Yom Tov. The custom is to read the first part of the Hagadah in preparation for fulfilling the Mitzvah of relating the story of the Exodus.
There are a number of reasons why this Shabbos is called the "Great Shabbos". Chronologically, the 15th of Nissan in the year 2448 occurred on Thursday. Erev Pesach, the 14th of Nissan, when the Bnai Yisroel did the 1st Korban Pesach, was Wednesday. That 1st Korban Pesach required that each household take their sheep 4 days beforehand, on the 10th of Nissan, and tie it to their bedposts. Being that the 1st Mitzvah given to the nation was the Korban Pesach, that Shabbos was the moment when the nation performed the 1st step of the 1st Mitzvah given to the nation! Four days before Wednesday is Shabbos. Therefore, the Shabbos before Pesach is called Shabbos Hagadol - the Great Shabbos - the Shabbos when the Bnai Yisroel began their first Mitzvah as a nation