You should start by downloading this paper, which is from the BMJ website.
The paper is a meta-analysis about a treatment for a common emergency presentation.
Meta-analyses are increasingly relied on to inform treatment decisions and you need to have a drivers, rather than a mechanics, knowledge of how they are useful.
You certainly don’t need to know how to perform the complicated mathematics, but you do need to understand the method and output. This will also help you prepare your Quality Improvement Project.