Martin Fowler's site is a good start, especially this collection: https://martinfowler.com/eaaCatalog/ https://martinfowler.com/eaaCatalog/ . And then read his

Martin Fowler's site is a good start, especially this collection: https://martinfowler.com/eaaCatalog/ https://martinfowler.com/eaaCatalog/ . And then read his books...