Welkom on the ‘How to Get Started’ page of Blavaan. The tutorial on how to run a simple regression model in Blavaan using JAGS can be found here, or here if you want to use Stan. We also have tutorials on how to run the same model, but in a frequentist way in Lavaan here and on how to complete the WAMBS checklist in Blavaan,here and here for Jags and Stan, respectively .
For more, really a lot more, of information on how to use Blavaan please refer to this CRAN website.