But require the need to act fast.. U sure u are comfortable? Advice u to stick to Aperture or Shutter priority modes first..
For Manual, u need to fall bk to ur cam light meter.. Norm is setting a shutter duration where u are comfortable shooting handhled.. and adjust everywhere else accordingly (pump up iso, open up aperture, -ve/+ve EV etc) to get a balanced exposure..
Of cos there's no hard fast rules, u need to know how each variables works in tandem with one another..