Research in biology is communicated mainly through peer-reviewed journal articles. Unless you are doing a historical retrospective, your research will probably focus on recently published articles.
Once you've found a few articles of interest, a great way to find even more relevant sources is by looking for related citations. Databases like Scopus and PubMed provide tools on the results page to help you do this.
Peer review is one way to evaluate the quality of an article. Use these slides to learn:
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