Whey protein powder is fairly easy to use and most product packaging provides information about recommended serving size and use.
Hemp protein powder is ideally used in a blend with pea protein powder which together provides a more complete amino acid profile.
Soy protein powder can be used to supplement protein intake directly after exercise or as part of a meal replacement diet for weight loss.
Most packaged protein powder include a suggested serving size which should be ideal for a meal replacement or a post workout protein boost.