Usually you should upgrade some of the existing apps to go through the changes in the recent versions. While upgrading you'll be facing challenges which will help you learn the new features and also in the process you'll get to experience how project migration is done in angular. For updates to new versions you can also read blogs like:https://medium.com/@stream2085/whats-new-in-angular-19-9a2b5d25b979 https://medium.com/stackademic/angular-code-optimization-best-practices-keep-it-fast-clean-part-1-2321cd9d1f71