Choose a user icon and name your profile so it'll be easier to find (e.g., 'Brown Account' or 'Personal Gmail').Scroll down to Manage People, from there you click “Add Person” at the bottom right.At the top right of your screen next to the three dots, click on the circle with your initial/profile picture and a drop down menu should appear.
For example, in one window you might be looking at your Brown Gmail, Calendar, and Docs, and in another window you might be reading your personal Gmail and using YouTube and Blogger with your personal account. You can have a window open for each account. This is a great way to work with more than one Google account (for example, and accounts) in Chrome without having to sign in and out, or use incognito windows.