This thread is an extension of >>>/b/1239/
A dedicated thread for sharing resources on how to draw. This could include digitally scanned books, YouTube videos, art blogs, reference images, drawing software, etc. The material does not necessarily have to be in English, but translations are always appreciated.
I highly recommend using https://www.pureref.com/ for working with references.
Personally, I copy and paste any digitally scanned books I download into PureRef as well and browse through them while drawing. I believe many professionals in the industry use it as well as I found out about it through a 3D modeling course.
For a good starting point go to the 'how to' tag on ex/e-hentai: https://e-hentai.org/tag/other:how+to and you can use something like https://github.com/KurtBestor/Hitomi-Downloader to download the full gallery.
https://gelbooru.com/index.php?page=post&s=list&tags=how_to
https://danbooru.donmai.us/posts?tags=how_to&z=5
My personal favorites for anime-style drawing:
https://e-hentai.org/g/3012733/adfe3ceea5/ (Takuya Kakikata English tutorials) https://e-hentai.org/g/3026421/525d0167aa/ (This one is untranslated but has a lot more)
https://e-hentai.org/g/1509008/e358d76aaf/ (Draw with Digital Tools! How to Draw Hair that Expresses Character, Japanese)
https://e-hentai.org/g/2405605/9ddd3d2ce5/ (Space Drawing Perspective, English)
https://e-hentai.org/g/1487888/df0ef8777e/ (Anime Effects, Japanese)
https://e-hentai.org/g/2176347/32c50f8ce3/ (How to draw a picture that is not complicated, Japanese)
https://e-hentai.org/g/2356901/910b0e951f/ (How to draw manga animals, Japanese)
https://e-hentai.org/?f_search=Hitomi+Kaki-kata (Drawing eyes, Japanese)