Do people at health stores know much about Whey/Creatine?

Question

according to my height weight, cycles etc..?

Answer 1

some do most don't.
most are only given information by suppliment suppliers to sell their product, so they are only passing on information they have been told.
if your goal is to build muscle and size, talk to someone who has acheived it, even better if they work in a health store though

Answer 2

most folks that work at supplement stores know next to nothing about the supplements that they sell.