How can a sole trader/small business owner use AI to their advantage?

I'm used to seeing articles about AI being used for either highly scientific uses or for generating semi-entertaining nonsense. For a personal business involving managing appointments, documenting meetings, tracking payments etc, can AI help with any of that? Other things include undertaking CPD training, occasional advertising as well as maintaining a website from time-to-time.

The people I know who don't think AI has any use for them belong in this category and work in the area of mental health, yoga teaching / training, nursing and massage therapy.