You want to create a talent profile at the career site and you can then begin to search for jobs and apply.
Go to the career site URL, click on the Sign In pulldown, and select Create a Talent Profile
Fill in the fields for your initial profile and attach a resume. Then select continue.
The system will send an activation email to the email address you included in your profile. Open this email and select the activation link to activate your account.
You will be asked to set up a password. Once done, you can now log into the career site to manage your profile, search for jobs, and apply.