I was going to answer a question about books for time series. However, in comments Andre Silva pointed out this answer (which is also a Community Wiki) and this other answer.
Now, the latest question is slightly different because the user specifically asks for (at least) two books, the first one very theoretical and not specifically related to forecasting, and a more applied second one, targeted at forecasting. Thus, in principle, the user might not be satisfied by Andre Silva's links. However, to avoid duplicating (or nearly duplicating) questions, I was thinking of adding my answer to the Community Wiki question, and let the user know with a comment. I think that's fine, what do you say?