Win Worley was a pastor whom God called into deliverance ministry unexpectedly, he had to learn how to cast out demons just in the process, and he loved people very much, trying to help them with all his heart. While all of it happened, he was working as a teacher and a pastor, and also he devoted lots of his time to pray for people.
You can find his books, the first one describing how all of it happened, and many booklets where he explains how to deal with certain demonic problems on amazon. You can also watch more of his videos on youtube. I do recommend his teachings, although I do not agree with all his methods of doing things but like Win always said, do not rely on him but check all things with the bible, the Holy Spirit will guide you. He had also a great sense of humour, which is not that common. After years of doing deliverance, evil spirits were so afraid of him that they were screaming just when he entered a church or another Christian gathering.