Here is a list of possible strengths & talents which could be on your list.
I hate to throw a long list out here ... (long lists can seem daunting) but sometimes we get stuck and just need a nudge. Maybe a menu can solidify the confidence?
Before you read a book, attend a class, sign up for a membership, attend a university.... Know the big picture and what you will need to learn.
Understand the topics first. As Stephen Covey says: "Begin with the end in mind."