Application and training timeline

Hello, I made a post here a few weeks ago about considering dropping out and pursuing a career in operating. I decided that is what I’m gonna do. Now I’m curious about the timeline starting at applications for local 825. I know applications are in September/October. But I want to know the timeline after that. When are interviews? When are the aptitude tests? And the lastly when is training and when do I start fully working as an apprentice. Any information helps. Thanks!