In order to use Google docs, you need to have a Google account.
If you already have a Gmail account, you can sign in to Google Drive using your Gmail username and password.
If you do not have a Google account, it is completely free to set up an account and the process is simple.
First, go to www.drive.google.com and choose "Individuals"
Then click "Go to Drive" and set up your free account!
Once you fill out the form, you are ready to begin creating Google documents. As an added bonus, your Google Drive account also provides you with free access to Google's other services, like Gmail.
When you set up your free Google account to access Google Drive, you will also be able to freely access the following Google applications:
.....and many more!