Paul (Saul) was a Jew that hated people that followed Jesus. He would throw followers of Jesus in Jail or even killed them. He also believed he was better than everyone else.
Saul and his companions decided to go on a trip to Damascus because Saul got permission from the high priest to imprison the followers of Jesus. They were either going to kill them or bring them back to Jerusalem. When they were getting close to Damascus, Saul saw a bright light appeared from Heaven and he fell off of his donkey. It was Jesus telling Saul to go to Damascus for instructions.
Jesus then blinded Saul for 3 days. He did not eat or drink for those 3 days. Upon reaching Damascus, Saul met Ananias. Ananias told Saul that he will see again and will be filled with the holy spirit. That’s exactly what happened. Ananias then Baptized Saul. After some days, Saul went to the synagogue