Register in webassessor.com for salesforce certification?

 On Webassessor you have to create a new webassessor login. After you have created a login, you can choose the exam and a location convenient to you (You can also take the exam online from your home in online proctored mode if you have a webcam), pay the fees via the credit card to schedule the exam. Choose SFDC customer initially. Partner is for special circumstances like a company that is an ISV or consulting partner for example, and employee is for an employee of Salesforce directly. If they ask for a company name just list n/a for now. Later on if you become a consultant the company name field will become important for bubbling your certifications up on the company's AppExchange profile. The opt in for verification is in reference to the verification site (http://certification.salesforce.com/verification). If you are opt-in, you'll be publicly visible on the site if someone enters your details. Training related additional info: Make sure to check out Trailhead if you haven't yet. That is an indispensable resource for learning. Additionally, the documentation online at developer.force.com is of course very useful, particularly for getting specifics of a class or method.