Use it any way you want. OpenMLU is not supposed to be prescriptive. The way the curriculum is currently designed is not the only one way you can use the resources presented here. You can follow the curriculum in order, pick and choose the topics you want to study or just bookmark resources to get some inspiration for what to study next, it's in your hands. For instance, to become a ML engineer, it is certainly not necessary to have finished all core courses. The reason we chose to structure the curriculum in such a comprehensive and broad way is to provide a self-studying roadmap that is close to what could be entailed in a university program.