in-person sales training program

I live in Houston and would like to attend an in-person sales training program. I have completed the Coursera training, which is good, but I think in-person training is better. I am an artist who thinks sales skills are below my pay grade, but I am not getting paid at all, so I need some serious sales skills. Any suggestions would be greatly appreciated. I am willing to travel for a few days to attend a good program. I have contacted Houston Community College and the University of Houston, and I am still waiting for an answer. When I searched on Google, there were so many options that I got confused. So, I am asking Reddit to help me out. Thanks!