I posted about jumping up curbs awhile ago, but I still can’t do it. If I find a small curb and do a few hops and jump side ways I can usually get it, but the only curbs I can jump up are the ones I can ride up 
Any other advice?
watch a few rolling hop tutorials and practice…that’s all you can do, there is no magic secret, the more you practice the better you’ll get.
Practice
It is all about practice. You need perfect coordination and you need to compress the tire and push off from the ground. At first you will not be able to jump up a sidewalk curb but with practice you will develop the coordination and be able to tackle whole sets of stair(even two or three at a time!) and even park benches!
Unicorn