I'm doing my budget (which keeps getting smaller) but would like to invest in an online textbook instead of ordering new paper-based ones. I rarely use the paper ones, but see much more use with the interactiveness of online texts. With that said, I do have some money to spend but cost would need to be equivalent or less to the traditional textbook which is about $80-$100 a book. Any suggestions?
Tags: science, textbook
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