#2 is great info. I found it quite difficult having to seemingly learn everything at one time. Oral prep (systems knowledge), flows and learning the profiles. It’s a little different in how we do things (even airline level) in Oz.
One tip tip I can share that works well is when your uncertain whether you understand a system or concept is try to explain it to someone. Teaching something shows you understand it.
Having a a beer or two can be a great way to blow off steam, exercise is also great and helps calm a running mind.