for me it was repetition, meaning the more I rode them the better I got at climbing them. a couple specifics, think about your gearing before you reach the hill, get down off your front high gear cuz you won't need them and it's easier to downshift using just the rear derailleur, don't over spin or you can burn out, don't mash if you don't have to, forget speed, the object is to climb, eventually you will find your ideal gear for each hill, then just sit and work, you'll get there, no matter how slow you are moving. eventually you get stronger. experiment with getting out of the saddle for some short sections, don't start on long hills, it takes some trial and error to learn when where and how to climb out of the saddle. that's a whole 'nother paragraph ... :-) hope some of that is helpful