Ehsan, A useful introductory text is Berry, D.A. (1996). Statistics: A Bayesian Perspective. Duxbury, London. especially if you are working in stats in medicine/healthcare. It uses only the most basic math.   To me, practical stats requires computer software. Unfortunately there's not nearly as much computer software out there to do Bayesian stats as to do frequentist stats, although some software does exist, such as -some Bayesian analyses within SAS -WinBUGS (Bayesian Analysis Using Gibbs Sampling for Windows) -firstBayes (mainly a teaching/learning tool) But many analyses can be done using frequentist software tools, because sometimes the results are the same even though the interpretations of those results need to differ. E.g., under some circumstances a 95% confidence interval is at least a close approximation to a 95% highest posterior density interval (although I hesitate to say that because one must understand the conditions required for that approximation to be good).   One last comment: Even though you're focusing on the practical side, I encourage you to read up on the meanings of frequentist results vs Bayesian results. E.g., (frequentist) p-value = Pr(results at least as extreme as those observed, assuming the tested hypothesis) vs. (Bayesian) posterior probability = Pr(tested hypothesis, given the observed data). Once one grasps these differences, many advantages of Bayesian analyses become clear. I recommend http://www.ncchta.org/execsumm/summ438.htm because it explains some of these differences in meaning as well as gives a variety of practical examples.   I could provide much more info but will stop there for now. --- On Thu, 2/5/09, ehsan sabaghiayan <e_sabaghian82@...> wrote: From: ehsan sabaghiayan <e_sabaghian82@...> Subject: [Statisticians_group] Help me: Bayes To: statisticians_group@... Date: Thursday, February 5, 2009, 3:52 PM Hi all I am an MSc Student of biostatistics and I want to learn about practical statistical Bayes. At the beginning I am searching to find a text book in this field. Can you recommend a suitable text book? Best Regards Ehsan Sabaghian MSc Student of Biostatistics Department of Social Medicine Mashhad University of Medical Sciences (MUMS)