What is "Synthesizing Info"?
The Merriam-Webster dictionary defines synthesis as: "the composition or combination of parts or elements so as to form a whole"; "the combining of often diverse conceptions into a coherent whole"
When you synthesize while writing a paper, you are combining the separate thoughts and ideas of the authors of your sources with your own thoughts and ideas. This is what makes a well-written, balanced research paper. A paper that is nothing but your own thoughts and ideas, unsupported by any other sources, is an opinion paper - not a research paper.
On the other hand, a paper that is just citations, with no thoughts, ideas, or new perspectives of your own is just a summary of your sources. This type of paper, in which you organize and summarize individual sources, is common in high school (book reports, etc.). In college-level research you will be expected to start synthesizing resources with your own thoughts, balancing your views with the views of others to create new perspectives on your research topics.