It is fairly simple to write a letter on a Mac computer. Firstly for a simple blank page you can use the in-built program called Text Edit. To find Text Edit you need to head into your applications folder which is marked with an A. When you find the program called Text Edit click on it. It will then open a blank page which you can start to compose your letter on.
You may also have Microsoft Word if you loaded it onto your computer. This again will be found in the applications section if it is not on your dashboard on the bottom of your screen. It will be a blue W symbol. If you do own this; click on it and you can use this for a few extra options over the simple Text Edit program.
When writing an official letter, you need to get the layout correct. The best way is to follow the MLA guidelines. This means having the date at the very top aligned to the right. Then press the space bar twice; include the address of the person you are sending it to. Once more press the space bar twice and align back to the left
To start any formal letter you need an appropriate greeting. The best for a letter such as this is to address the person as ‘Dear’ and then put their full name. Finally, you should finish your letter with a formal sign off, such as ‘Sincerely’ and then your full name.