A MyNCBI account allows you to customize parts of the interface in PubMed.
Use this section of the guide to have PubMed highlight your search terms. You also have the ability to display the full article abstract in the search results and view up to 200 citations per page.
Once you have entered search terms, you can sort them 3 different ways:
To change how your results are sorted, click on Display Options and choose from the "Sort by" dropdown menu.
Additionally, you can also change the number of items displayed per page and showing the entire abstract (as opposed to just the record summary).