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.
Mantal Chia is very good and had many books and youtube training videos including many playlists for complete subjects.
His “Basic Training” playlist:
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.