Included in every new hire or employee onboarding packet should be a copy of your handbook. In addition to company history, work hours, and dress code, there are lots of company policies that are considered crucial elements for your handbook. Employees use the handbook as a frequent frame of reference; ideally, a handbook should be as thorough as possible. The notion of less is more does not apply here.
Your employee handbook should be updated regularly, and available in a conspicuous location, such as the company intranet. Missing one of these vital components, or any not mentioned in the video is almost just as bad as not having a handbook at all. Think of your employee handbook as a representation of your company culture and values through referenceable material.