Schwarzenegger's fitness book, fitness without equipment and muscle fitness training chart are recommended. The suggestion is foreign language books. After all, books that can go abroad are better than those that can't. The most famous book in China is Dumbbell Fitness written by Zhao Zhixin. Although I don't think it's as good as Schwarzenegger's fitness book, it's good that there are videos and simple movements in it.
These books usually have no videos, only pictures. As for videos, you can find them online, but it is better to read books for theoretical knowledge.
Some books stand the test because they are widely circulated, and it is easy to point out any shortcomings.
Illustration of Muscle Fitness Training was reprinted five times and many mistakes were corrected.
It's best not to ask people online. Online knowledge has many shortcomings. For example, it may be short of weight, may be deleted, and may be short of drawings. Some fitness knowledge is translated by netizens themselves, and mistakes may be made. Some official WeChat accounts in Weibo copied netizens or published books everywhere, and they were deleted. You can't learn anything in a year. Some big V's who write their own fitness knowledge are not completely trustworthy. After all, the books introduced above have been criticized and revised by netizens at home and abroad, with wide spread and long time. However, these big V articles need to be trimmed because of their insufficient dissemination scope and time. If we wait another 30 to 50 years, it is estimated that these big V will rectify what he wrote several times.