When I started longboarding last summer, cracks, bumps and little twigs were a real problem for me. My Dinghy came with 60 mm wheels, but I replaced them with 72 mm Plow Kings and suddenly I became unstoppable!
Climbing up curbs is still a problem. I can get one foot on the ground and push to pass small ones, but I wouldn't mind learning one or two tricks to climb them with style. The method described by Lotfi in his video looks nice, but I need to practice my manuals first.