This tutorial will demonstrate fairly advanced searching in Web of Science. The most important thing to note is that you should search with synonymous or related terms with "OR".
Web of Science includes three citation indices:
You can select to search only the SSCI from the main search page, under "more settings".
Once you've identified an article in a database and you want to the full text, click on the green Find It @ PSU button to see if the article is available from journals in the Library (electronic and print). If you see a Download Article link, you can click to access the electronic copy.
If there is no Download Article link, you can request the article using Interlibrary Loan.