think of a rhizome kinda like a tree trunk. the buds sprout off the trunk like the limbs of the tree and radiate outward from the trunk, then grow up and become the vines that produce the hops. in the spring, just as growth begins, take a shovel and dig straight down about 6-10 inches out from the main crown. lift the soil gently and you will see any rhizomes that have decided to grow outwards from the crown. these can be clipped (close to the crown and used to propagate new plants). continue to lift the soil, every couple inches, until you've worked your way entirely around the crown. most of the rhizomes are located within the top six inches of the soil (some may be deeper depending on how deep you originally planted). don't worry about removing too many buds as there are TONS of extra buds left on the main crown to produce a crop for the next year. have fun and believe what you see more than what you read. it all takes time.