Summon is usually the best starting point for finding articles, books and dissertations. 

• video intro to Summon (4 mins) 
• collection of guides if you need help with particular Summon searches

You may also want to run supplementary searches in these databases:

• EBSCO: includes Business Source Premier. With a British Library reader's ticket you can access a more comprehensive business database: visit the British Library's electronic resources list, and search for Business Source Complete. By the same means you can access Index to Legal Periodicals & Books Full Text.
• Google Scholar: an alternative to Summon
  • info about using Scholar 
  • video intro to Scholar (3 mins)
• IP resources from Eagle-i. Compiled by the Institute of Advanced Legal Studies. Run a keyword search for IP to access a curated list of resources, covering many jurisdictions.  Not useful for art law.
• Nexis Uni: another major database with much legal material; particularly good for IP.

Other key resources:

• ethics and restitution guide for many more resources in that area
• Copyright Laws and Regulations 2024 is a guide to copyright in 24 jurisdictions, including the China, Italy, UK, USA and a range of other countries from all continents
• World Intellectual Property Organization (WIPO).