How to Start Up Your Mac
Before you can use your Mac, you obviously have to start it up. Here’s the simple way to start up your Mac — the way you’ll probably do it 99 percent of the time: Press the power button.
Depending on the type of Mac you have, the power button might be in back (Mac Mini and some iMacs), front (Mac Pro and some iMacs), or above the keyboard (on laptop models like the MacBook and MacBook Pro).
As soon as you press the power button, your Mac plays a musical chime to let you know that it’s starting up. Your computer displays a big gray Apple logo on the screen to let you know that the computer is working.
When you unpack your Mac and turn it on for the very first time, it will ask that you type your name and make up a password to create an account for using your Mac. To guide you through the process of setting up a Mac for the first time, a special program called the Setup Assistant runs, and it asks for information, such as the current time zone, the current date, and whether you want to transfer files and programs from another Mac to your newer one. You also have to go through this procedure if you reinstall your operating system. Normally, you need to run through this initial procedure only once. The most important part of this initial procedure is remembering the password you chose because you’ll need this password to log into your account or install new software.
After the operating system loads, you can start using your computer to run other programs so you can write a letter, browse the Internet, balance your checkbook, or play a game.