If you're looking for a specific item, the easiest way to track it down is by using the library catalogue, iDiscover. Type a few words from the article's title into the search box. If the article is available online (and many of them are) then you should be able to get to it directly by clicking 'Full text available'. If it isn't online, then iDiscover will tell you where copies of the print journal can be found.
You can see the whole list of journals the university subscribes to on the ejournals website
Search for the journal by title in ejournals@cambridge.
ebooks are acquired in packages or selectively through the ebooks@cambridge service to support teaching and learning. The ebook collection is accessible from the ebooks@cambridge
An ebooks LibGuide is available from the following link http://libguides.cam.ac.uk/ebookscam
For questions about e-resources, (journals, ebooks, databases) see these Frequently Asked Questions. Please also feel free to get in touch with your subject specialist librarian.