This image provides a workflow of the process of conducting a systematic review or meta-analysis. If you need to enlarge the image, right click on it and select "Open image in new tab".
The flowchart breaks the process down into fourteen manageable steps, not all of which may be necessary if you are conducting a systematic review rather than a meta-analysis.
In these two videos, Professor Qureshi provides a detailed step-by-step explanation of the procedure for conducting a systematic review using the PRISMA method. Although he suggests using Google Scholar as a way to search for literature, it might be better to use library databases instead since it may not be possible to replicate your search results using Google Scholar.