My NCBI is an account management feature that allows you to save searches, select display formats (e.g. title or abstract), set preferences like filtering options, and set up auto-alerts when a new article on your research topic is published.
You can sign into My NCBI in the top right of the screen. The URL to the login page is https://www.ncbi.nlm.nih.gov/account/
The below video gives a brief tour of the MyNCBI homepage.
PubMed results can be easily exported into a citation manager like Zotero. Citation management software allows you to create a library of citations (references) you can cite in your research, as well as making it easier to insert, format, edit, and update in-text citations and your references list in a Microsoft Word document.
The Send To button offers a number of options for sharing or saving search results: