Massive bug bear for me.
I learn't how to score and umpire at a young age - as a youngster playing mens cricket in the 70's and 80's you had too. Even today I can't understand "cricketers" who can't score and can't / won't have a turn at umpiring especially at the lower standards when they are not provided.
You have to watch and follow the game rather than just look at it and I've found you can learn so much about your own team / opposition from being in the centre of the action.
Don't get me started about keeping the scoreboard upto date between overs and your team mates giving the opposition bowlers a massive incentive at grounds with less detailed score boards by shouting "Geoff, you only need 3 for your 50 / 100 etc"
Rant over