Once you have finished evaluating (and choosing) your sources, you can start to incorporate their information into your paper. You may ask yourself additionally if the chosen sources fit in your research, or possibly go back and get more information.
You may also find yourself incorporating the information you've gathered into your own personal mental "database" of facts that you know.
It's easy because of the ease of cut and paste to be tempted to include your sources literally by copying passages or even by restating ideas too closely. This is a big no-no, called formally "Plagiarism." Plagiarism is a big problem at Universities and also in the wider world. In fact, Plagiarism is so serious, that the next module is all about how to avoid Plagiarism and cite your sources.