If you don't want anybody to see your profile on your computer you can lock it with the password. In this lesson I will show you how you can set different password options to log in, in Windows 8.
If you are looking for a certain words on website, bur there's too much text to find it in a reasonable time, you can use a handy find function built in Google Chrome browser.
You can set notifications to find out when your collaborators have modified your spreadsheets, and learn what sheets or cells they've modified. You can also choose how often you'd like to be notified.