Consider taking this online course by Johns Hopkins University: https://www.coursera.org/learn/systematic-review.

The Cochrane Handbook for Systematic Reviews of Interventions is a good free online resource as well: https://training.cochrane.org/handbook/current.

thanks a lot

I agree with Aedrian Abrilla. In addition, this resource link may be useful

A step by step guide for conducting a systematic review and meta-analysis with simulation data

https://www.researchgate.net/publication/334845785_A_step_by_step_guide_for_conducting_a_systematic_review_and_meta-analysis_with_simulation_data

Agree with the above, and, if you want your meta-analysis to be fully open, check out the following with templates you can freely use: https://psyarxiv.com/t5dwg/

The Cochrane handbook is very useful

https://training.cochrane.org/handbook/current

Thx