I never thought data/connectivity could cost so much!! I feel bad for you. Here is what you can do, don't watch video tutorials ever because they are waste of time, especially a whole series. You get a false feeling of learning, but all you do is sit and watch a video as if it were some cartoon. It's better to read an article, a book or anything that requires active participation. And while reading them, code a sandbox application while reading them to practice then and see them in action. I can send you some good books on web application development; give me your email ID and tell me what are you interested in - frontend or backend or both.