If you sign up with a verified email address or social and an account exists with that email address associated with it, your Trailblazer account links them. Connect a personal email or social account, in addition to your work one, so you can access your profile no matter where your career takes you.

Yes, Trailhead's guided learning paths are free for anyone to use – this is an effort to democratize the industry. However, there are also some paid courses that Salesforce offers through Trailhead Academy. These are bootcamps and courses where you learn from experts, as opposed to the solo learning of Trailhead.

What is the difference between Trailhead and Trailblazer? Trailhead is the name of the Salesforce Training environment, while Trailblazer is the name for a Trailhead member. Trailblazers are a global community.