There’s a wealth free on youtube, and it’s all the same after a while. Spell it qigong as one word and I think you get more Chinese and fewer westernized results.
This video has a good high level intro into what things are for a foundational orientation.
Mantak Chia is very good and had many books and youtube training videos including many playlists for complete subjects.
If all you did was bingewatch Mantak Chia and follow along you’d be golden. After a point you’d just be able to practice to the level you’re comfortable with and not watch much more.
Book wise, the first two links here:
Your first main milestone is learning to run the microcosmic orbit. With that alone and the knowledge under it, you are set for life.