My lad turned 18 last week Will, if I could give you both a single piece of advice it would be to try not to bother too much at this stage about keeping / sacking managers, about formations and team choices or about anything else to be honest. Happily debate them with mates / us lot, but in the end don't overly worry about it. This is the time (once your exams are finished) to be doing the bonkers away games with your mates, getting into scrapes and making some memories and just generally enjoying the whole incredible experience of being a young football fan, there's nothing like it and I wish I could go back to my early 20's and relive it all again, despite the fact that we were league 2 and bloody awful.
Leave the deep philosophical debates and serious decisions to us old farts cos we did all our bonkers stuff 30 years ago and the deep underlying reason why we are all so bitter and opinionated is cos we all yearn for those lost years of youth.
I'll get mi coat.