I have a whole slew of questions. i have a mix of some old school gear and how to use it to ease my re-entry into this awesome hobby!

OK i have a EZ run brushless motor. It says 6560 kv on the can. What would that be equivalent to in a brushed motor in turns? Is there a way to use a multimeter to make sure that it is functioning? i cannot simply plug it into a speed controller because i don't have a brushless esc yet. I'm a little bit scared to buy a esc and just plug it in. i'm scared to plug in a used motor and possibly fry a new esc. assuming that the motor works how should i gear it for an hpi blitz?

I also have a dynamite mega 1 charger that is the old school dial timer style. I need to figure out a way to use a multi meter to ensure that my batteries are charging to capacity, how do i go about doing that? i have a 2100 and 4500 mah battery.

of course lipo brushless and nice charger are in the works but i need to get in little by little, charger then brushless, then batteries, i just need to know how to make what i have work for now.