You can import mails and contacts from your other accounts such as Yahoo!, Hotmail, AOL or POP3 accounts, etc.
Step 1: Login your Gmail account (please refer here to open one if you do not have an account yet);
Step 2: In the Gmail account, click the "Setting" button from the right-top corner;
Step 3: Click the "Settings" command from the drop-down list;
Step 4: Click the "Accounts and Import" tab in the settings menu;
Step 5: In the "Import mail and contacts" section, click "Import mail and contacts" in blue;
Step 6: Type the email address that you want to import contacts from, and click "Continue";
Step 7: Click "Continue" in the next window to continue;
Step 8: Sign in your email account such as Yahoo account;
Step 9: Click the "Agree" button in the next window;
Step 10: Close the window when you see the message "Authentication successful";
Step 11: Check the items to import, such as "Import Contacts";
Step 12: Click "OK" when you finish.