I know you’re probably excited to get started on your project, but I highly suggest really reading and understanding a library before trying to implement. Asking others to solve the issue for you may get you one step closer to completing your project, but if you don’t understand the core functionality of it, it will certainly come back to bite you down the road. There are a ton of resources in the README of the MobX repo: https://github.com/mobxjs/mobx#getting-started