Returning player, knowledge not returning
I was following a build on [mobalytics](https://mobalytics.gg/poe-2/builds/coc-balls-invoker-ronarray) but now the build has changed and I'm lost. I wasn't sure how to really follow the build to begin with. Can someone please explain to me how to use a build? I'm not sure where I should be at lvl 50 particularly. Any help helps.