designing web sites flush rails

i'm only training flush rails. i've review few books, i've watched lots railscasts, i've looked during examples.

however, operative initial critical digest rails, i've gotten hung adult morally exercise unequivocally simple web site comforts many tutorials i've seen lack.

for instance: navigation menus. lots tutorials stationary one, nonetheless dynamic? i wish navigation bar that's opposite opposing pages, i doing that?

i cruise best proceed learn things observant instance code. there any good open sourced sites ror? any instance formula i check out?

i speculation doubt unequivocally law controlling mvc. simple thought unequivocally basic, i know that. nonetheless seems many applications have any biased totally removed any other... i wish to, say, brew information twin models arrangement same page? take instance i posed, i have navmodel pagemodel, pagecontroller opening both models? i speculation i'd feigned pagecontroller wholly opening pagemodel, zero other. examples i've seen seem work way...is unsound assumption?

or am i totally blank point, 'doing wrong?'