Step by step, or taking no chances, will not make much difference to ordinary people, especially novices. The external action traction of luck is only conducive to guiding consciousness, and "driving the body straight with both hands" is more conducive to beginners to pay attention to the norms of action and avoid being too bent and skewed.
3. It is suggested to choose one according to your physical condition and characteristics. The effect of exercise will not make much difference to the average person. Unless you have a foundation in practicing martial arts or qigong, you need to pay attention to choosing the right way. Don't take an action from each edition to practice. After all, there is a difference between personality and ideas, which requires inner understanding.