How should a guitarist without a guitar exercise his fingers scientifically and reasonably?
Progress with small goals, in principle, the learning of guitar (and other musical instruments) is divided into two parts. One is cognitive learning. This is a guided learning process that requires your brain to think, such as understanding and absorbing a phrase, a scale, or a specialty. The other part is the learning process of limbs, through constant practice, until your fingers can show what you have learned. These two parts of learning. Therefore, it is much easier to divide what you want to learn into several parts and study separately than to swallow the whole goal. Please believe that the smaller the division, the faster the learning will be and the better the effect will be. Before starting physical exercise, please ask yourself whether you have mastered and understood the content of exercise. It is also important not to repeat the mistakes in the exercise. If you feel a little overwhelmed, maybe you should narrow your goal a little. Nothing hinders your progress more than overload. Sometimes things are not what you expect. Once you understand a small goal (such as the first five notes of a scale), you can keep practicing until you reach your ideal speed or until you are exhausted. What you have to remember is that this just means that you can play better, but it doesn't mean that you can understand better. The actual cognitive process is only 2 minutes at most. You should distinguish between long-term goals and short-term goals. For example, improvising smoothly between different chords is a long-term goal. This goal consists of a series of tasks such as scales and arpeggios. These can be subdivided into different locations or in other ways. It is important that when you set a goal, no matter how reasonable it is, please express it clearly in words or write it down. In this way, you won't fall into practice unconsciously. Remember: a journey of a thousand miles begins with a single step!