The first thing you need to do is make the denominators equal.
The first thing need to start an action potential is a stimulus.
Recognize your strengths
The first thing you need to do is learn to spell !
it means to do the things you need to do first then you can do the fun things next
The first thing you need is training.
learn the material.
you need to know how to play it.
The first part is that you need a power source. The second thing is that you need a load. The third thing is that you need the power cables.
Probably, an idea or concept.
First thing you need to do is stretch .