Searching in PubMed
Scientific communication is key for scientists to share their knowledge with others. One way of scientific communication is through writing and publishing papers containing results of experiments.
PubMed is a database of over 30 million scientific literature citations for papers in the biomedical and life sciences fields. Abstracts should be available for all papers, and links to the full text are available (but many need access rights generally provided by your university, some are freely available). A more detailed PubMed tutorial is available here, and answers to common questions are found here, but here are a few tips to get you started.
Be as specific as possible in your search terms. For example, search "lipid-protein interactions" instead of just "membrane proteins" if you are specifically interested in the interactions between the lipid and protein.
You can use the Advanced Search feature to search for specific authors, journals, year of publication, etc.
Once you enter your search terms, you can sort by publication date, or best match. Unless you are looking for new publications, generally best match is better. You can switch by clicking Display Options. This can also show the full abstract on the search results page.
On the left side of the results page, you can filter results by year of publication either by the slider in the Results by Year panel or the Publication Date panel (1 year, 5 years, 10 years)
On the left side of the results page, you can also filter results by type of article. When doing an initial literature search, it can be useful to look at reviews. A regular scientific article reports the findings of new experimental data. A review, on the other hand, is a type of scientific article that summarizes and synthesizes information from many previously published articles about a particular topic. Review articles are a good way to get a broader understanding of the topic and, then, you can dive into the experimental data by searching for the articles that the review cites.