To use Blogger, you must have a Google account (or we usually say Gmail). If you already have one, just access blogger.com to active your Blogger account.

If you have not Google account, just access https://accounts.google.com/SignUp?service=blogger and fill all fields. Everything can be done in 5 minutes.

Leave comment at the bottom of this doc and I am willing to help if you feel hard when registering an account for Blogger.