The Library website has a range of training guides for several of the main search tools:
Searching database via Ebsco - LibGuide
Searching database via Ovid - LibGuide
Each search tool also provides in-depth training materials via their own websites and YouTube channels.
The ProQuest platform has a detailed Libguide for NHS staff: LKS Support - NHS ProQuest - LibGuides at ProQuest
Face to face