There are many options for storing electronic media about members of your community, but the simplest is to add the link to their person record.
On all person detail screens, under the "Other" folder there is a tab "Links". Click the green "Add Record" button and edit the row that appears on the tab below. There are fields for School Year, Classification, Description, URL, Parent Portal Display (for students only), and a Notes field. School year and classification are optional fields; you can add a link record with only a URL if relevant.
Depending on your reasons for preserving the media articles, it may be relevant to explore Individual events.