Providing youtube videos with tutorials or show cases with your products and services is a powerful thing.
To create a youtube channel with your brand can bring so much extra business. However it needs to provide
entertainment or/and real value for the target market that you have for your products and services.
Blogging is the same way - you can react to questions from customers and while posting a "Frequently asked
questions" - static page section might be a good thing - it is more interactive if you do those "Q&A"-sessions in
a blog where additional people could add comments and share their thoughts with you - which can be so valuable
if people speak their mind and you can improve and add value to your customers by acting on their suggestions