If you teach yourself qigong, you'd better be honest, don't learn traditional qigong, learn modern qigong. Traditional Qigong can't get into the door and walk high without a master. Self-study recommends intelligent qigong, which is a kind of health qigong, not only knowing what it is, but also knowing why it is. It has been practiced by millions of people, it is safe and reliable, it has a complete and effective theoretical system and method, and it can learn a high level without the help of a master, let alone physical fitness. Please search "Tong Ling Station" for details. The information on it is very complete. If you want to get started, you can download Concise Intelligent Qigong first. Illustrated with pictures and texts. You can hold your breath through the top and stand in the village to learn by yourself. You can practice qi thoroughly for three months. If your constitution is sensitive, you should feel angry soon by practicing the method of holding your breath.
If you have any questions to discuss during your study, you can enter the intelligent forum from the friendship link in Tong Ling Station.