Since the iPad came out we have been itching for an app like Inkling, and this new textbook app might really be a game changer. The problem for kids has always been that textbooks are way too heavy to carry around, especially multiple ones. Have you ever seen those 10 year olds with bulging backpacks, shlepping more pounds on their backs then their little bodies can handle? Heck, even big kids have a hard time carrying around textbooks. And then there is always the problem of kids losing textbooks, which is especially a pain when they tend to be so pricey. Inkling solves that problem by bringing full color textbooks…