Like regular Google the search results provide a link to the article (unless you have selected 'Include Citations'), but there's a lot more going on. Below the result there are some other links
Taking these individually
Save to your library (see personalisation page)
Create a citation for your reference list (below)
The number of articles - if any - indexed by Google Scholar that have referenced this article. This will be discussed in a little more detail below
The number of articles Google Scholar thinks are similar to this article, again discussed below
The number of different versions of the article Google Scholar knows about - see below
This is potentially quite helpful to your research. You might find an article useful to your research and so you'll cite it (include it in your reference list) in your assignment or project work. The Cited By link is to all the articles in Google Scholar database that have also cited this article. So. if you found this article useful and another author also found it useful, you might be interested in the article written by the other author. Hence the 'Cited By' link might help you to found more articles that could help you with your research. Since articles have to be published before they can be cited, the articles that cite the original article will have been published more recently than the original article, so clicking the Cited By... link might help you find more recently published articles on your topic of interest.
This links to article that the Google Scholar algorithm thinks are similar to that article. The algorithm is secret, so you'll never know how it decides articles are related, so what it thinks is similar might not be the same as what you think is similar, but if you think that the article is interesting, it is worth clicking on this link.
Articles are written for and submitted to journals. They will be published on the journal website. However slightly different versions can be published elsewhere - for example, on preprint servers or institutional repositories. If the search result doesn't have full-text, one of the other versions might have full-text available on a preprint server, a repository or elsewhere.
You can copy and paste citations into your reference list. To do so, click on the Cite icon below the item - the This will open a box
If you're using reference management software, you can click on the appropriate link at the bottom of the box. If you're using Zotero, click on the EndNote link - both use the same format. You will be prompted to save a file containing the citation details, which you can then import into your software.