First impressions count, and often onboarding is the first impression customers will get of your product.
While "wizard" style onboarding sequences are useful, they will often prioritise breadth of knowledge over depth.
By creating a variety of frequently asked questions, customers can have access to a much more in-depth bank of knowledge, all just a question away.
This allows you to go beyond "getting started" and propel your users to become power users, without the need for customer support agents.