I totally get it, ordering online can be iffy if you don't know how the style will fit! Although all pants are made a little different, this is a general guideline for where to measure on yourself and also a pair of jeans to figure out the best fit for you. Grab that measuring tape (the floppy kind) and lets go! 

WAIST: Measure where your natural waistline is, usually below your navel.

HIPS: Stand with feet together and wrap measuring tape around the widest part of your hips. 

RISE: The top of the waistline to the fork of the trousers. 

INSEAM: For of the trouser (crotch) down the inside of the leg. 

THIGH: Wrap around the fullest part of your upper leg.