re: Poker & How to play mid poker pairs(77,88,99)
There is not an exact way to play any hand or else many people would have studied it and become masters. It depends on the blind levels, position, table dynamics (whether aggressive or passive players), stage of the tournament, your chipstack.
You have to take all things things into consideration and try and play accordingly. Sometimes you have to call, other times you will better off raising whereas there will also be spots where you have to lay them down. So adjust accordingly, you will make mistakes playing mid pairs like 1010 or JJ as it is pretty common to overplay them but try and learn from the mistakes you make and good luck.