I don't have any formal education on philosophy but I read some books including Think by Simon Blackburn that got me interested in this subject.
Thanks.
Edit: Specifically, I was intrigued by Kant's conception of the self as an "organizing principle" and would love to read more about it and other views/approaches to the subject. I guess I'll have to read the primary sources eventually but I was hopping to find a kind of survey of the main views from prominent thinkers.