Here are some screenshots from a typical signup/application procedure:
1) This is what the initial account signup page looks like:

2) You will need to agree to the Author EULA:

3) You will need to enter the characters that appear in the image; they will be
different for you.

4) You will need to enter your contact information and an email address.

5) After this you should see the final page, confirming a successful signup:

6) After you have signed up for an account, you will need to login:

7) After logging in, you will see the following page; click on "Create a new Paper Submission" to begin the application process:

8) This is what the application page looks like:

9) Further down the page, you will see an entry "File Upload"; this is where the submission file containing the additional requested information can be uploaded.