P.2.1- Each turn is divided into 5 phases, and the phases themselves are divided into steps: 1. Beginning Phase a. Untap Step b. Upkeep Step c. Draw Step 2. First Main Phase - This phase has no steps. 3. Combat Phase - This phase's steps are described in Rule C.1. 4. Second Main Phase - This phase has no steps. 5. End Phase a. End of Turn Step b. Cleanup Step
P.2.2- Each turn is played completely through all the phases by one player, and then play proceeds to the opponent who then takes a turn, and so on. [Fifth Edition, Page 8] Note - Various spells and abilities can cause a player to skip a turn or get an extra turn.
P.2.3- A spell or ability may grant a player an additional turn after the current one. If multiple additional turns are granted during one turn, take these additional turns in the reverse to the order granted. In other words, the most recently granted extra turn is taken first. [CompRules 2002/02/20 - 300.6] (This is a big REVERSAL. Extra turns used to be taken in the order granted.)
P.2.Ruling.1- You still have every phase and step in every turn even if nothing happens during one of the phases or steps. [CompRules 1999/04/23]