Some Resources(Books, Links) for OOAD

https://www.quora.com/What-are-the-best-object-oriented-programming-and-design-pattern-online-courses

https://www.quora.com/Is-there-any-good-online-course-on-Object-Oriented-Analysis-and-Design

 

https://www.codeproject.com/Articles/1137299/Object-Oriented-Analysis-and-Design