Below are the steps how to get for free renewal domain name on CO.CC:
1. Sign in to your account at CO.CC
2. Choose a domain name in experied who want to extend more active period
3. Click Renew
4. Select / Personal check (renewal fee: $ 0/year), check also lower
5. Click Continue
6. Done. Wait in the 1 × 24h domain / blog you will be loaded again as before
For screenshoot, please see below:

If you don’t have account on CO.CC or maybe you want to get one or more domains from CO.CC, you can …

To increase your Alexa rank in the long run, I would highly recommended that one focus on developing quality content which attracts and maintains a large audience instead of purely focusing on artificially increasing your Alexa Rank.
Here is a collection of methods you can use to boost your Alexa Rank. Most of these tips are derived from several fellow webmasters I know who claimed to have derived positive results through their experiments with the Alexa Rankings.

If you forget your password, you can log on to the computer by using a new password that you create by using the Password Reset Wizard and your password reset disk.