The younger generations may one day never need to lug around heavy and expensive textbooks for their classes, Tecca reports. California Governor Jerry Brown signed two bills yesterday that will fund the creation of 50 open source [1] digital textbooks and will launch the California Open Source Digital Library to host them. The law could help bring down the ballooning expenses of college for students and their families. The 50 titles will be selected by the California Open Education Resources Council. The group will pick the textbooks from public, post-secondary classes, then collect bids for the creation of those materials as digital books in 2013…