The first step to using TopCoder is to actually get an account.
To do this, navigate your browser to the TopCoder website and launch the TopCoder Arena:
The next step is to sign up for a free TopCoder account. All you need to do is to go to the registration page...
… and fill in the registration form:
That's it! You now have a TopCoder account. Now, let's try solving your first TopCoder problem.