Most databases have options to email articles to yourself.
Most databases have "cite this" buttons. The citations they generate aren't always perfect, but with a little proofreading they are useful.
When searching Google add to the end of your search terms filetype:pdf This will help you find the text of articles rather than links to publishers' websites.
These links will take you to different kinds of sources. Note that you can usually toggle between scholarly (research reports in journals written by scientiests) and popular sources (magazine and newspaper articles that report on the issues or which include opinion pieces, useful for understanding artuments on various sides of an issue).
One quick way to find government publications on a topic is to search Google and add, after your search terms, site:.gov. This limits your results to sources that have URLs ending in gov - which may be federal, state, local, or in a few cases foreign sites. (Australia also uses .gov for some of their government agencies.)
Bear in mind that government sources may be partisan. Members of the House and Senate will argue from a particular side. Materials from the Whitehouse will reflect the administration's perspective.
However, some agencies provide government officials with unbiased reports. These might be helpful for background information and for outlining the different perspectives.
Librarians are here to help!