In Adobe Illustrator CC, you can open a new document by clicking New in the file menu or pressing Cmd+N.
Step-by-step explanation:
If you want to open a new document in Adobe Illustrator CC, you have to click on the File menu. After you click on the File menu, a drop-down list of options is made available. Out of these options, you need to choose New, which will open a new document.
Alternatively, you can also use a keyboard shortcut for creating a new document. You need to press Cmd+N on the keyboard and a new document opens.