torque is a rotational force. if you get your knuckle bar which is 1 foot long, and you exert 1lb weight on the end (notice i didnt say force...) then the torque acting on the nut or bolt is 1lb per foot - 1lb/ft
if you make the knuckle bar 2feet long, and put 10lb on the end, its 10lb x 2feet...so 20lb/ft.
power is just the torque times RPM, i forget the numbers, but i know 52 is in there somwhere!! but yeah...power is a factor of torque and speed.
a good way of looking at it, is spinning a bike wheel with it off the ground. in the lower gears, the torque on the wheel is more than in the lower hears. but you run out of chuff at a lower speed. if you go ina higher gear, its harder to start the wheel spinning because the torque applied to the wheel is less, but you can exert more power and keep it spinning at a higher speed.
im toss at explaining stuff but hopefully you understood that