Recommendations for online rstan/brms courses

I am an early career medical researcher (a non-statistician/non-mathematician) interested in applied statistics for tackling different analytical challenges in health data analysis. I am quite familiar with R (especially tidyverse) and also a bit with the brms package (tried some simple modelling). It seems that bayesian modelling offers great flexibility for all kinds of health care data, meaning that it would be a valuable career capital for my future. If I may, I have 2 questions:

  1. For a start, should I learn brms/rstan or both?
  2. Could you please recommend good online rstan/brms courses to start with?

PS! I already ordered McElreath’s “Statistical Rethinking.”

If you are interested in applied statistics, then see my answer here Beginner Advice - #2 by jd_c
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