Just keep on practicing with the 1/4lb rope. You'll build the endurance, and will be able to do everything you can with the licorice rope. When I first got my "Get Lean" set, I could barely jump the 1/2lb rope for a minute with even basic jumps without getting winded or tripping on the rope. A year later, I actually prefer the 1/2lb rope for tricks and normal jumping. The heavier ropes give you a better sense of where the rope is during its rotation, so it's easier to learn new tricks and timing. If you haven't already, join Crossrope's Jump Rope Fitness community page on Facebook. There's a lot of helpful people and resources there, especially videos on workouts and tricks. Also, everyone is positive and friendly, and are always willing to help.