Although the tips I posted in this thread were written for a different scenario (working with a succession of revisions in the same project), the implementation is precisely the same as what you would do for having multiple volumes in the same work. Whether that is because you want to focus on one major part for a while, or actually write multiple books of a series into one project, there is a good set of features to handle these working styles.
I’d run some searches on the forum as well, this is a question that comes up with regularity, and a lot of tips have been shared in the past.