Once you know that you are looking for a journal article, the next step is to access it. The majority of UCL journals are available electronically, but there are still some that are only available in print. If that is the case, you need to come into to the library.
If you know you want an electronic article, you can start in Explore and use the filters to narrow your search to 'Online Resources' and 'Articles.'
To go even deeper in searches, use a relevant database or Google Scholar.