[vitaminjay1982]

a hard reset is when you take the phone to its "fresh out the box" state. a soft reset is done by pressing in that really small button on the bottom of the phone.

app usually com in a zip folder or already in cab form. and your phone will handle both when opened. usefull really depends on the function you require. and most can be found here or over at xda.

as far as flash im not to sure on. i do think opera on the phone has it built in and some people have gotten skyfire to run on the touch pro.

a rom is the os of the phone. so yeah like firmware. flashing to a different rom is easy if you can follow directions.