Did someone send you this link?
First: Know that it is meant only as a guide. It's not that you can't shoot great photos, this is just to help you capture the best photography possible to be used in marketing.
Having good photos for your marketing team to use is crucial to having a professional website. So often we see beautiful templates with poor photography and it stands out in a bad way.
We've put together a quick guide to send to those who might be shooting photography for you, feel free to pass it around.