from the application:
Search digital content through categories: open the category menu that you will find in the upper left corner of the application.
through the browser, to open the search box press the button which you will find in the top right of the application and enter the content to search.
Search digital content through categories: it has a menu of categories on the left.
through the search engine, you will find the search box in the upper left part of the side menu. Enter the text to search for, if there are results, the first 5 results found will appear automatically.
If you wish to do an advanced search, you can enter text in the search box and press 'enter' or you can click the icon , be redirected to the advanced search page, where you will find the first results obtained by categories. If you click a category name, a more extensive search on the category will be made.